Introduction to Biology Exam Practice Tests
Course Introduction
Introduction to Biology offers a comprehensive overview of the fundamental principles of life and living organisms. This course covers essential topics such as cell structure and function, genetics, evolution, ecology, and the diversity of life forms. Students will explore the scientific method, understand biological processes at the molecular and cellular levels, and examine how organisms interact with each other and their environments. Through a combination of lectures, laboratory exercises, and discussions, this course prepares students for more advanced biological studies and fosters an appreciation for the complexity and interconnectedness of life on Earth.
Recommended Textbook
Campbell Biology 2nd Canadian Edition by
Jane B. Reece
Available Study Resources on Quizplus
56 Chapters
5383 Verified Questions
5383 Flashcards
Source URL: https://quizplus.com/study-set/1001
Page 2
Chapter 1: Introduction: Evolution and Themes of Biology
Available Study Resources on Quizplus for this Chatper
77 Verified Questions
77 Flashcards
Source URL: https://quizplus.com/quiz/19757
Sample Questions
Q1) Which of the following correctly describes a cell?
A)A cell is not able to perform all the functions of life.
B)Cells may group together to form tissues but are not able to perform a specialized function until higher levels of structure.
C)One example of a specialized tissue is a chloroplast.
D)The cell is the fundamental unit of living organisms.
E)There are 5 different types of molecules within a cell.
Answer: D
Q2) Which of the following correctly describes the properties and processes of life?
A)Life is disordered.
B)An organism's adaptations evolve over 2 or 3 generations.
C)Organisms are not able to regulate their internal environment.
D)Organisms process energy during the course of their lives.
E)Inherited information controls the pattern of growth but not the development of an organism.
Answer: D
To view all questions and flashcards with answers, click on the resource link above.
3
Chapter 2: The Chemical Context of Life
Available Study Resources on Quizplus for this Chatper
98 Verified Questions
98 Flashcards
Source URL: https://quizplus.com/quiz/19758
Sample Questions
Q1) Which drawing in the figure above depicts the electron configuration of an atom capable of forming three covalent bonds with other atoms?
E)E
Answer: B
Q2) Which statement correctly describes chemical reactions?
A)All chemical reactions result in the making and breaking of bonds.
B)There is less mass after molecules have undergone a chemical reaction.
C)Most chemical reactions are reversible.
D)Chemical reactions proceed until all reactant becomes product.
E)The rate of chemical reactions is determined by reactant structure not reactant concentration.
Answer: A
To view all questions and flashcards with answers, click on the resource link above.
4
Chapter 3: Water and Life
Available Study Resources on Quizplus for this Chatper
92 Verified Questions
92 Flashcards
Source URL: https://quizplus.com/quiz/19759
Sample Questions
Q1) Which type of bond must be broken for water to vaporize?
A)ionic bonds
B)both hydrogen bonds and ionic bonds
C)polar covalent bonds
D)hydrogen bonds
E)both polar covalent bonds and hydrogen bonds
Answer: D
Q2) Measurements show that the pH of a particular lake is 4.0.What is the hydrogen ion concentration of the lake?
A)4)0 M
B)10 ¹ M
C)10 M
D)10 M
E)4%
Answer: C
To view all questions and flashcards with answers, click on the resource link above. Page 5
Chapter 4: Carbon and the Molecular Diversity of Life
Available Study Resources on Quizplus for this Chatper
86 Verified Questions
86 Flashcards
Source URL: https://quizplus.com/quiz/19760
Sample Questions
Q1) Which of the following statements correctly describes cis-trans isomers?
A)They have variations in arrangement around a double bond.
B)They have an asymmetric carbon that makes them mirror images.
C)They have the same chemical properties.
D)They have different molecular formulas.
E)Their atoms and bonds are arranged in different sequences.
Q2) Which of the following is true of carbon?
A)It forms only polar molecules.
B)It can form a maximum of three covalent bonds with other elements.
C)It is highly electronegative.
D)It can form both polar and nonpolar bonds.
E)It can form ionic bonds.
Q3) Which of the groups above is a basic functional group that can accept H and become positively charged?
To view all questions and flashcards with answers, click on the resource link above.
Page 6
Chapter 5: The Structure and Function of Large Biological
Molecules
Available Study Resources on Quizplus for this Chatper
131 Verified Questions
131 Flashcards
Source URL: https://quizplus.com/quiz/19761
Sample Questions
Q1) Which of the following are nitrogenous bases of the purine type?
A)cytosine and guanine
B)guanine and adenine
C)adenine and thymine
D)thymine and uracil
E)uracil and cytosine
Q2) Which of the following molecules is an amino acid with a hydrophobic R group or side chain?
A)3
B)7
C)8
D)12
E)13
Q3) Which class of biological molecules are grouped together because they are hydrophobic?
A)carbohydrates
B)lipids
C)proteins
D)nucleic acids
E)This is not a criterion for grouping molecules.
To view all questions and flashcards with answers, click on the resource link above. Page 7
Chapter 6: A Tour of the Cell
Available Study Resources on Quizplus for this Chatper
111 Verified Questions
111 Flashcards
Source URL: https://quizplus.com/quiz/19762
Sample Questions
Q1) The minimum distance two points can be separated and still discerned as separate is the
A)resolution.
B)magnification.
C)visibility.
D)objective magnification.
E)contrast.
Q2) The liver is involved in detoxification of many poisons and drugs.Which of the following structures is primarily involved in this process and therefore abundant in liver cells?
A)rough ER
B)smooth ER
C)Golgi apparatus
D)nuclear envelope
E)transport vesicles
To view all questions and flashcards with answers, click on the resource link above. Page 8
Chapter 7: Membrane Structure and Function
Available Study Resources on Quizplus for this Chatper
88 Verified Questions
88 Flashcards
Source URL: https://quizplus.com/quiz/19763
Sample Questions
Q1) Which correctly describes intracellular joining?
A)long-lasting interaction between two adjacent cells
B)short-lived interaction between membrane protein on one cell and carbohydrate on another cell
C)fusion of the plasma membranes between two adjacent cells
D)fusion of intracellular membrane with plasma membrane of the same cell
E)joining of microfilaments with extracellular matrix
Q2) Which of the following types of molecules are the major structural components of the cell membrane?
A)phospholipids and cellulose
B)nucleic acids and proteins
C)phospholipids and proteins
D)proteins and cellulose
E)glycoproteins and cholesterol
Q3) The fluid mosaic model of the membrane proposes that membranes
A)are a phospholipid bilayer.
B)are a phospholipid bilayer between two layers of hydrophilic proteins.
C)are a single layer of phospholipids and proteins.
D)consist of protein molecules embedded in a fluid bilayer of phospholipids.
E)consist of a mosaic of polysaccharides and proteins.
To view all questions and flashcards with answers, click on the resource link above. Page 9
Chapter 8: An Introduction to Metabolism
Available Study Resources on Quizplus for this Chatper
92 Verified Questions
92 Flashcards
Source URL: https://quizplus.com/quiz/19764
Sample Questions
Q1) Which of the following is the smallest closed system?
A)a cell
B)an organism
C)an ecosystem
D)Earth
E)the universe
Q2) For the enzyme-catalyzed reaction shown in the figure,which of these treatments will cause the greatest increase in the rate of the reaction,micromolar?
A)doubling the activation energy needed
B)cooling the reaction by 10°C
C)doubling the concentration of the reactants from 1.0 to 2.0 micromolar
D)tripling the concentration of the reactants from 1.0 to 3.0 micromolar
E)reducing the G
Q3) A reaction that absorbs free energy from its surroundings is a(n)________ reaction.
A)spontaneous
B)endothermic
C)exothermic
D)endergonic
E)exergonic
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Cellular Respiration and Fermentation
Available Study Resources on Quizplus for this Chatper
128 Verified Questions
128 Flashcards
Source URL: https://quizplus.com/quiz/19765
Sample Questions
Q1) Which co-enzyme is the most versatile electron acceptor in the cell?
A)Acetyl Co-A
B)FAD
C)NAD
D)ATP
E)CytC
Q2) Starting with one molecule of glucose,the energy-containing products of glycolysis are
A)2 NAD , 2 pyruvate, and 2 ATP.
B)2 NADH, 2 pyruvate, and 2 ATP.
C)2 FADH , 2 pyruvate, and 4 ATP.
D)6 CO , 2 ATP, and 2 pyruvate.
E)6 CO , 30 ATP, and 2 pyruvate.
Q3) Which of the following normally occurs regardless of whether or not oxygen (O)is present?
A)glycolysis
B)fermentation
C)oxidation of pyruvate to acetyl CoA
D)citric acid cycle
E)oxidative phosphorylation (chemiosmosis)
To view all questions and flashcards with answers, click on the resource link above. Page 11
Chapter 10: Photosynthesis
Available Study Resources on Quizplus for this Chatper
103 Verified Questions
103 Flashcards
Source URL: https://quizplus.com/quiz/19766
Sample Questions
Q1) From his experiments,van Niel concluded that
A)he must have done something wrong.
B)something else was being used to provide hydrogen.
C)CO was not being split to produce O .
D)CO was directly involved in O production.
E)H O was being used to provide hydrogen.
Q2) A gardener is concerned that her greenhouse is getting too hot from too much light,and seeks to shade her plants with coloured translucent plastic sheets.What colour should she use to reduce overall light energy,but still maximize plant growth?
A)green
B)blue
C)yellow
D)orange
E)Any colour will work equally well.
To view all questions and flashcards with answers, click on the resource link above. Page 12
Chapter 11: Cell Communication
Available Study Resources on Quizplus for this Chatper
85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/19767
Sample Questions
Q1) Adenylyl cyclase has the opposite effect of which of the following?
A)protein kinase
B)protein phosphatase
C)phosphodiesterase
D)phosphorylase
E)GTPase
Q2) Why has C.elegans proven to be a useful model for understanding apoptosis?
A)The animal has as many genes as complex organisms, but finding those responsible is easier than in a more complex organism.
B)The nematode undergoes a fixed and easy-to-visualize number of apoptotic events during its normal development.
C)This plant has a long-studied aging mechanism that has made understanding its death just a last stage.
D)While the organism ages, its cells die progressively until the whole organism is dead.
E)All of its genes are constantly being expressed so all of its proteins are available from each cell.
To view all questions and flashcards with answers, click on the resource link above.
13
Chapter 12: The Cell Cycle
Available Study Resources on Quizplus for this Chatper
98 Verified Questions
98 Flashcards
Source URL: https://quizplus.com/quiz/19768
Sample Questions
Q1) In which group of eukaryotic organisms does the nuclear envelope remain intact during mitosis?
A)seedless plants
B)dinoflagellates
C)diatoms
D)dinoflagellates and diatoms only
E)seedless plants, dinoflagellates, and diatoms
Q2) Which of the following investigations might be most productive to show what the data on the teenagers might indicate?
A)test male teenagers
B)test teenagers who say they are not sexually active
C)test female teens at different times in their menstrual cycles
D)test relatives of the teens previously tested
E)test teenagers from different school systems
Q3) For anaphase to begin,which of the following must occur?
A)Chromatids must lose their kinetochores.
B)Cohesin must attach the sister chromatids to each other.
C)Cohesin must be cleaved enzymatically.
D)Kinetochores must attach to the metaphase plate.
E)Spindle microtubules must begin to depolymerize.
To view all questions and flashcards with answers, click on the resource link above. Page 14
Chapter 13: Meiosis and Sexual Life Cycles
Available Study Resources on Quizplus for this Chatper
90 Verified Questions
90 Flashcards
Source URL: https://quizplus.com/quiz/19769
Sample Questions
Q1) When do centromeres split and sister chromatids migrate to opposite poles in meiosis?
A)anaphase I
B)telophase I
C)anaphase II
D)telophase II
E)prophase II
Q2) When does the synaptonemal complex disappear?
A)late prophase of meiosis I
B)during fertilization or fusion of gametes
C)early anaphase of meiosis I
D)mid-prophase of meiosis II
E)late metaphase of meiosis II
Q3) To view and analyze human chromosomes in a dividing cell,which of the following is/are required?
A)electron microscope
B)radioactive staining
C)fluorescent staining
D)DNA stain and a light microscope
E)a stain particular to human cells
To view all questions and flashcards with answers, click on the resource link above. Page 15
Chapter 14: Mendel and the Gene Idea
Available Study Resources on Quizplus for this Chatper
92 Verified Questions
92 Flashcards
Source URL: https://quizplus.com/quiz/19770
Sample Questions
Q1) A cross between a true-breeding sharp-spined cactus and a spineless cactus would produce
A)all sharp-spined progeny.
B)50% sharp-spined, 50% dull-spined progeny.
C)25% sharp-spined, 50% dull-spined, 25% spineless progeny.
D)all spineless progeny.
E)It is impossible to determine the phenotypes of the progeny.
Q2) Visitors at Algonquin Park in Northern Ontario may miss out on the brilliant red colouration of Acer sacchrum in autumn because
A)the timing is genetically programmed and the people didn't come at the right time.
B)these animals have already gone into hibernation by then.
C)these trees don't produce anthocyanin so far north.
D)anthocyanin production and chlorophyll loss are responses to environmental cues and it may have happened already.
E)Acer sacchrum doesn't live in the park.
To view all questions and flashcards with answers, click on the resource link above.
16
Chapter 15: The Chromosomal Basis of Inheritance
Available Study Resources on Quizplus for this Chatper
75 Verified Questions
75 Flashcards
Source URL: https://quizplus.com/quiz/19771
Sample Questions
Q1) What proportion of their sons would be colour-blind and of normal height?
A)none
B)half
C)one out of four
D)three out of four
E)all
Q2) At what point in cell division is a chromosome lost so that,after fertilization with a normal gamete,the result is an embryo with 45,X?
I.an error in anaphase I
II.an error in anaphase II
III.an error of the first postfertilization mitosis
IV.an error in pairing
A)I or II only
B)II or IV only
C)III or IV only
D)I, II, or III only
E)I, II, III, or IV
To view all questions and flashcards with answers, click on the resource link above.
17
Chapter 16: The Molecular Basis of Inheritance
Available Study Resources on Quizplus for this Chatper
84 Verified Questions
84 Flashcards
Source URL: https://quizplus.com/quiz/19772
Sample Questions
Q1) In his transformation experiments,what did Griffith observe?
A)Mutant mice were resistant to bacterial infections.
B)Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form.
C)Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic.
D)Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains.
E)Mice infected with a pathogenic strain of bacteria can spread the infection to other mice.
Q2) In the polymerization of DNA,a phosphodiester bond is formed between a phosphate group of the nucleotide being added and which functional group of the last nucleotide in the polymer?
A)the 5' phosphate
B)C
C)the 3' OH
D)a nitrogen from the nitrogen-containing base
E)the 5' OH
To view all questions and flashcards with answers, click on the resource link above.
18
Chapter 17: From Gene to Protein
Available Study Resources on Quizplus for this Chatper
106 Verified Questions
106 Flashcards
Source URL: https://quizplus.com/quiz/19773
Sample Questions
Q1) If a nucleotide substitution switched a U for a C,such that the codon was read as CGC instead of CGU,what would the effect be?
A)a misfolding of the protein
B)an incomplete protein
C)nothing, as the third nucleotide does not determine the amino acid used.
D)nothing, since both these codons code for arginine
E)it would initiate a tumour
Q2) Transcription in eukaryotes requires which of the following in addition to RNA polymerase?
A)the protein product of the promoter
B)start and stop codons
C)ribosomes and tRNA
D)several transcription factors (TFs)
E)aminoacyl synthetase
Q3) Post-translational modifications of proteins may include which of the following?
A)removal of introns
B)addition of a 5' cap
C)addition of a poly-A tail
D)addition of carbohydrates to form a glycoprotein
E)removal of exons
To view all questions and flashcards with answers, click on the resource link above. Page 19
Chapter 18: Regulation of Gene Expression
Available Study Resources on Quizplus for this Chatper
116 Verified Questions
116 Flashcards
Source URL: https://quizplus.com/quiz/19774
Sample Questions
Q1) One of her colleagues suggested she try increased methylation of C nucleotides in a mammalian system.Which of the following results would she most likely see?
A)increased chromatin condensation
B)decreased chromatin condensation
C)abnormalities of mouse embryos
D)decreased binding of transcription factors
E)inactivation of the selected genes
Q2) Within the first quarter hour,the researcher sees that the intact RNA is found in the cells.After 3 hours,she is not surprised to find that
A)Dicer enzyme has reduced it to smaller double-stranded pieces.
B)the RNA is degraded by 5' and 3' exonucleases.
C)the double-stranded RNA replicates itself.
D)the double-stranded RNA binds to mRNAs to prevent translation.
E)the double-stranded RNA binds to tRNAs to prevent translation.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 19: Viruses
Available Study Resources on Quizplus for this Chatper
71 Verified Questions
71 Flashcards
Source URL: https://quizplus.com/quiz/19775
Sample Questions
Q1) What conclusion is most consistent with the results of the radioactive labelling experiment?
A)The host cell cannot translate viral protein with the amino acid analogues.
B)Host cell ribosomes only translate the viral code into short polypeptides.
C)The RNA is only translated into a single long polypeptide, which is then cleaved into shorter ones.
D)The RNA is translated into short polypeptides, which are subsequently assembled into large ones.
E)The large radioactive polypeptides are coded by the host, whereas the short ones are coded for by the virus.
Q2) Emerging viruses arise by
A)mutation of existing viruses.
B)the spread of existing viruses to new host species.
C)the spread of existing viruses more widely within their host species.
D)mutation of existing viruses, the spread of existing viruses to new host species, and the spread of existing viruses more widely within their host species.
E)none of these.
To view all questions and flashcards with answers, click on the resource link above. Page 21
Chapter 20: DNA Tools and Biotechnology
Available Study Resources on Quizplus for this Chatper
78 Verified Questions
78 Flashcards
Source URL: https://quizplus.com/quiz/19776
Sample Questions
Q1) How difficult is it to clone a plant?
A)very difficult, since retroviruses are needed
B)easy, as even mature differentiated cells are totipotent
C)easy, as even mature differentiated cells a pluripotent
D)impossible, since restriction enzymes prevent gene duplication
E)it depends entirely on the age of the plant
Q2) What is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting the plasmid into a bacterium?
I.Transform bacteria with a recombinant DNA molecule.
II.Cut the plasmid DNA using restriction enzymes.
III.Extract plasmid DNA from bacterial cells.
IV.Hydrogen-bond the plasmid DNA to nonplasmid DNA fragments.
V.Use ligase to seal plasmid DNA to nonplasmid DNA.
A)I, II, IV, III, V
B)II, III, V, IV, I
C)III, II, IV, V, I
D)III, IV, V, I, II
E)IV, V, I, II, III
To view all questions and flashcards with answers, click on the resource link above.
Page 22
Chapter 21: Genomes and Their Evolution
Available Study Resources on Quizplus for this Chatper
64 Verified Questions
64 Flashcards
Source URL: https://quizplus.com/quiz/19777
Sample Questions
Q1) What is gene annotation in bioinformatics?
A)identifying protein coding regions within a sequence
B)describing the functions of protein-coding genes
C)describing the functions of noncoding regions of the genome
D)matching the corresponding phenotypes of different species
E)comparing the protein sequences within a single phylum
Q2) What is proteomics?
A)the linkage of each gene to a particular protein
B)the study of the full protein set encoded by a genome
C)the totality of the functional possibilities of a single protein
D)the study of how amino acids are ordered in a protein
E)the study of how a single gene activates many proteins
Q3) Barbara McClintock,who achieved fame for discovering that genes could move within genomes,had her meticulous work ignored for nearly four decades,but eventually won the Nobel Prize.Why was her work so distrusted?
A)The work of women scientists was still not allowed to be published.
B)Geneticists did not want to lose their cherished notions of DNA stability.
C)There were too many alternative explanations for transposition.
D)She allowed no one else to duplicate her work.
E)She worked only with maize, which was considered "merely" a plant.
To view all questions and flashcards with answers, click on the resource link above. Page 23
Chapter 22: Descent with Modification: A Darwinian View of Life
Available Study Resources on Quizplus for this Chatper
68 Verified Questions
68 Flashcards
Source URL: https://quizplus.com/quiz/19778
Sample Questions
Q1) In a hypothetical environment,fish called pike-cichlids are visual predators of algae-eating fish (in other words,they locate their prey by sight).If a population of algae-eaters experiences predation pressure from pike-cichlids,which of the following is least likely to be observed in the algae-eater population over the course of many generations?
A)selection for drab colouration of the algae-eaters
B)selection for nocturnal algae-eaters (active only at night)
C)selection for larger female algae-eaters, bearing broods composed of more, and larger, young
D)selection for algae-eaters that become sexually mature at smaller overall body sizes
E)selection for algae-eaters that are faster swimmers
Q2) Which of the following must exist in a population before natural selection can act upon that population?
A)genetic variation among individuals
B)variation among individuals caused by environmental factors
C)sexual reproduction
D)Three of the responses are correct.
E)Two of the responses are correct.
To view all questions and flashcards with answers, click on the resource link above. Page 24
Chapter 23: The Evolution of Populations
Available Study Resources on Quizplus for this Chatper
92 Verified Questions
92 Flashcards
Source URL: https://quizplus.com/quiz/19779
Sample Questions
Q1) The recessive allele that causes phenylketonuria (PKU)is harmful,except when an infant's diet lacks the amino acid phenylalanine.What maintains the presence of this harmful allele in a population's gene pool?
A)heterozygote advantage
B)stabilizing selection
C)diploidy
D)balancing selection
Q2) Which of the following is most likely to produce an African butterfly species in the wild whose members have one of two strikingly different colour patterns?
A)artificial selection
B)directional selection
C)stabilizing selection
D)disruptive selection
E)sexual selection
Q3) What proportion of the population is probably heterozygous (Aa)for this trait?
A)0)05
B)0)25
C)0)50
D)0)75
To view all questions and flashcards with answers, click on the resource link above.
Page 25
Chapter 24: The Origin of Species
Available Study Resources on Quizplus for this Chatper
76 Verified Questions
76 Flashcards
Source URL: https://quizplus.com/quiz/19780
Sample Questions
Q1) Speciation can reveal traits that cause reproductive isolation.These traits
A)can include a change in one gene or in a small number of genes.
B)can include a change in a large number of genes and gene interactions.
C)don't depend on genetic variation as long as geographic variation is maintained.
D)depend on sexual selection.
E)A and B
Q2) What is the best explanation for the speciation event that produced the wild sunflower Helianthus anomalis?
A)hybridization of two sunflower species where natural selection produced extensive genetic changes, but with no change in chromosome number
B)hybridization of two sunflower species where natural selection produced extensive genetic changes with duplication of chromosomes
C)hybridization followed by asexual reproduction
D)gradual speciation that occurred over millions of years
E)allopolyploid speciation
To view all questions and flashcards with answers, click on the resource link above.
Chapter 25: The History of Life on Earth
Available Study Resources on Quizplus for this Chatper
89 Verified Questions
89 Flashcards
Source URL: https://quizplus.com/quiz/19781
Sample Questions
Q1) The appearance of Pax-6 in all animals with eyes can be explained in multiple ways.Based on the information above,which explanation is most likely?
A)Pax-6 in all of these animals is not homologous; it arose independently in many different animal phyla due to intense selective pressure favouring vision.
B)The Pax-6 gene is really not "one" gene. It is many different genes that, over evolutionary time and due to convergence, have come to have a similar nucleotide sequence and function.
C)The Pax-6 gene was an innovation of an ancestral animal of the early Cambrian period. Animals with eyes or eyespots are descendants of this ancestor.
D)The perfectly designed Pax-6 gene appeared instantaneously in all animals created to have eyes or eyespots.
Q2) Which listing of geological periods is in the correct order,from oldest to most recent?
A)Cambrian, Devonian, Permian, Cretaceous
B)Devonian, Cambrian, Permian, Cretaceous
C)Cambrian, Permian, Devonian, Cretaceous
D)Permian, Cambrian, Cretaceous, Devonian
To view all questions and flashcards with answers, click on the resource link above.
Chapter 26: Phylogeny and the Tree of Life
Available Study Resources on Quizplus for this Chatper
91 Verified Questions
91 Flashcards
Source URL: https://quizplus.com/quiz/19782
Sample Questions
Q1) Which of the following is true of all horizontally oriented phylogenetic trees,where time advances to the right?
A)Each branch point represents a point in absolute time.
B)Organisms represented at the base of such trees are descendants of those represented at higher levels.
C)The fewer branch points that occur between two taxa, the more divergent their DNA sequences should be.
D)The common ancestor represented by the rightmost branch point existed more recently in time than the common ancestors represented at branch points located to the left.
E)The more branch points there are, the fewer taxa are likely to be represented.
Q2) The various taxonomic levels (namely,genera,classes,etc.)of the hierarchical classification system differ from each other on the basis of A)how widely the organisms assigned to each are distributed throughout the environment.
B)their inclusiveness.
C)the relative genome sizes of the organisms assigned to each.
D)morphological characters that are applicable to all organisms.
To view all questions and flashcards with answers, click on the resource link above.
28
Chapter 27: Bacteria and Archaea
Available Study Resources on Quizplus for this Chatper
96 Verified Questions
96 Flashcards
Source URL: https://quizplus.com/quiz/19783
Sample Questions
Q1) This bacterium derives nutrition by digesting human intestinal contents (in other words,food).Humans lacking this bacterium have no measurable reproductive advantage or disadvantage relative to humans who harbour this bacterium.Consequently,the bacterium can be properly described as which of the following?
1)symbiont
2)endosymbiont
3)mutualist
4)commensal
A)4 only
B)1 and 2
C)1 and 4
D)2 and 3
E)2 and 4
Q2) What is the goal of bioremediation?
A)to improve human health with the help of living organisms such as bacteria
B)to clean up areas polluted with toxic compounds by using bacteria
C)to improve soil quality for plant growth by using bacteria
D)to improve bacteria for production of useful chemicals
To view all questions and flashcards with answers, click on the resource link above.
Chapter 28: Protists
Available Study Resources on Quizplus for this Chatper
82 Verified Questions
82 Flashcards
Source URL: https://quizplus.com/quiz/19784
Sample Questions
Q1) Which of the following is correctly described as a primary producer?
A)slime moulds
B)kinetoplastid
C)apicomplexan
D)diatom
E)radiolarian
Q2) You are given the task of designing an aquatic protist that is a primary producer.It cannot swim on its own,yet must stay in well-lit surface waters.It must be resistant to physical damage from wave action.It should be most similar to a(n)
A)diatom.
B)dinoflagellate.
C)apicomplexan.
D)red alga.
E)radiolarian.
Q3) Which of the following was derived from an ancestral cyanobacterium?
A)chloroplast
B)mitochondrion
C)hydrogenosome
D)mitosome
E)Two of the responses above are correct.
To view all questions and flashcards with answers, click on the resource link above. Page 30
Chapter 29: Plant Diversity I: How Plants Colonized Land
Available Study Resources on Quizplus for this Chatper
93 Verified Questions
93 Flashcards
Source URL: https://quizplus.com/quiz/19785
Sample Questions
Q1) The 2-m height attainable by Polytrichum moss is at the upper end of the size range reached by mosses.What accounts for the relative height of Polytrichum?
A)the cuticle that is found along the ridges of "leaves"
B)"leaves" that are more than one cell layer thick
C)high humidity of surrounding air that provides support against gravity
D)reduced size, mass, and persistence of the sporophytes that allows gametophores to grow taller
E)the presence of conducting tissues in the "stem"
Q2) Increasing the number of stomata per unit surface area of a leaf when atmospheric CO levels decline is most analogous to a human
A)breathing faster as atmospheric CO levels increase.
B)putting more red blood corpuscles (RBCs)into circulation when atmospheric O levels decline.
C)removing RBCs from circulation when atmospheric O levels increase.
D)breathing more slowly as atmospheric O levels increase.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 30: Plant Diversity II: The Evolution of Seed Plants
Available Study Resources on Quizplus for this Chatper
119 Verified Questions
119 Flashcards
Source URL: https://quizplus.com/quiz/19786
Sample Questions
Q1) Meiosis is most likely to be represented by which number(s)in the figure above?
A)2
B)4
C)2 and 8
D)4 and 8
E)10 and 12
Q2) The dispersal and/or nurture of young after hatching from the egg is what type of angiosperm analogue?
A)endosperm
B)pollen tube and sperm nuclei
C)carpels
D)fruit
E)integuments
Q3) Which of the following structures is incorrectly matched with function in the life cycle of an angiosperm?
A)microspore - develops into a pollen grain
B)megaspore - forms female gametophyte
C)double fertilization - produces embryo and endosperm
D)seed germinates - develops into mature gametophyte
E)microsporocytes - produce microspores
To view all questions and flashcards with answers, click on the resource link above. Page 32
Chapter 31: Fungi
Available Study Resources on Quizplus for this Chatper
105 Verified Questions
105 Flashcards
Source URL: https://quizplus.com/quiz/19787
Sample Questions
Q1) Why are mycorrhizal fungi superior to plants at acquiring mineral nutrition from the soil?
A)Hyphae are one hundred to one thousand times larger than plant roots.
B)Hyphae have a smaller surface-area-to-volume ratio than do the hairs on a plant root.
C)Mycelia are able to grow in the direction of food.
D)Fungi secrete extracellular enzymes that can break down large molecules.
Q2) At which location is the mycelium currently absorbing the most nutrients per unit surface area,per unit time?
A)A
B)B
C)C
D)D
Q3) Which of the following cells or structures are associated with asexual reproduction in fungi?
A)ascospores
B)basidiospores
C)zygosporangia
D)conidiophores
E)ascocarps
To view all questions and flashcards with answers, click on the resource link above. Page 33
Chapter 32: An Overview of Animal Diversity
Available Study Resources on Quizplus for this Chatper
93 Verified Questions
93 Flashcards
Source URL: https://quizplus.com/quiz/19788
Sample Questions
Q1) Whatever its ultimate cause(s),the Cambrian explosion is a prime example of A)mass extinction.
B)evolutionary stasis.
C)adaptive radiation.
D)All three of the responses are correct.
E)Only two of the responses are correct.
Q2) Basing your inferences on information in the previous paragraph,to which clade(s)should cycliophorans belong?
1)Eumetazoa
2)Deuterostomia
3)Bilateria
4)Ecdysozoa
5)Lophotrochozoa
A)1 only
B)1 and 3
C)1, 3, and 5
D)2, 3, and 4
E)2, 3, and 5
To view all questions and flashcards with answers, click on the resource link above. Page 34
Chapter 33: An Introduction to Invertebrates
Available Study Resources on Quizplus for this Chatper
111 Verified Questions
111 Flashcards
Source URL: https://quizplus.com/quiz/19789
Sample Questions
Q1) A shared derived characteristic for members of the arthropod subgroup that includes spiders would be the presence of A)chelicerae.
B)an open circulatory system.
C)an exoskeleton.
D)a cuticle.
E)a cephalothorax.
Q2) The teacher and class were especially saddened when the colonial hydrozoan died.They had watched it carefully,and the unfortunate creature never even got to produce offspring by budding.Yet,everyone was elated when Tommy (now recovered)noticed a small colonial hydrozoan growing in a part of the tank far from the location of the original colony.The teacher was apparently unaware that these hydrozoans exhibit
A)spontaneous generation.
B)abiogenesis.
C)alternation of generations.
D)ecdysis.
E)a medusa stage.
To view all questions and flashcards with answers, click on the resource link above.
35
Chapter 34: The Origin and Evolution of Vertebrates
Available Study Resources on Quizplus for this Chatper
126 Verified Questions
126 Flashcards
Source URL: https://quizplus.com/quiz/19790
Sample Questions
Q1) Gd is a cold-loving fungus.Thus,which characteristics of abnormal bat behaviour can be most expected to favour the growth of this fungus?
A)shifting roosting location to the mouth of the cave during winter
B)searching for food during winter
C)searching for food during the day
D)All three of the options listed are correct.
E)Only two of the options listed are correct.
Q2) Which of these are amniotes?
A)amphibians
B)fishes
C)turtles
D)lungfish
Q3) Which extant chordates are postulated to be most like the earliest chordates in appearance?
A)lancelets
B)adult tunicates
C)amphibians
D)reptiles
E)chondrichthyans
To view all questions and flashcards with answers, click on the resource link above.
Page 36
Chapter 35: Plant Structure,Growth,and Development
Available Study Resources on Quizplus for this Chatper
82 Verified Questions
82 Flashcards
Source URL: https://quizplus.com/quiz/19791
Sample Questions
Q1) A vessel element would likely lose its protoplast in which section of a root?
A)zone of cell division
B)zone of elongation
C)zone of maturation
D)root cap
E)apical meristem
Q2) A mutation allows only A gene activity in a developing flower.Which flower part(s)will develop in this plant?
A)sepals
B)petals
C)stamens
D)carpels
E)both sepals and petals
Q3) Which of the following cells transport sugars over long distances?
A)parenchyma cells
B)collenchyma cells
C)sclerenchyma cells
D)tracheids and vessel elements
E)sieve-tube elements
To view all questions and flashcards with answers, click on the resource link above.
Page 37
Chapter 36: Resource Acquisition and Transport in Vascular Plants
Available Study Resources on Quizplus for this Chatper
100 Verified Questions
100 Flashcards
Source URL: https://quizplus.com/quiz/19792
Sample Questions
Q1) Phloem transport is described as being from source to sink.Which of the following would most accurately complete this statement about phloem transport as applied to most plants in the late spring?
Phloem transports ________ from the ________ source to the ________ sink.
A)amino acids; root; mycorrhizae
B)sugars; leaf; apical meristem
C)nucleic acids; flower; root
D)proteins; root; leaf
E)sugars; stem; root
Q2) Which of the following is not a function of the plasma membrane proton pump?
A)hydrolyzes ATP
B)produces a proton gradient
C)generates a membrane potential
D)equalizes the charge on each side of a membrane
E)stores potential energy on one side of a membrane
Q3) Most of the water taken up by a plant is
A)used as a solvent.
B)used as a hydrogen source in photosynthesis.
C)lost during transpiration.
D)used to keep cells turgid.
Page 38
To view all questions and flashcards with answers, click on the resource link above.
Chapter 37: Soil and Plant Nutrition
Available Study Resources on Quizplus for this Chatper
99 Verified Questions
99 Flashcards
Source URL: https://quizplus.com/quiz/19793
Sample Questions
Q1) Which of the following essential nutrients plays an essential role in the opening and closing of the stomatal aperture?
A)Fe
B)Bo
C)Mg
D)H
E)K
Q2) Reddish-purple colouring of leaves,especially along the margins of young leaves,is a typical symptom of deficiency of which element?
A)C
B)M
C)N
D)P
E)K
Q3) How do macronutrients differ from micronutrients?
A)They differ in whether they are essential for plant growth and survival.
B)They differ in their availability in soil.
C)They differ in how much nitrogen, phosphorus, and potassium are present.
D)They differ in the amount of the nutrient that plants require.
To view all questions and flashcards with answers, click on the resource link above.
Page 39
Chapter 38: Angiosperm Reproduction and Biotechnology
Available Study Resources on Quizplus for this Chatper
107 Verified Questions
107 Flashcards
Source URL: https://quizplus.com/quiz/19794
Sample Questions
Q1) The male wasp,Campsoscolia ciliata,transfers pollen from one orchid to another orchid of the same species.What "reward" does the male wasp receive from the orchid plants for helping with the orchid pollination?
A)a supply of energy-rich nectar
B)volatile chemical hormones that help the male wasp find a sexually receptive female
C)no reward; the male wasp is deceived by the flower shape and odour
D)successful copulation with the flower
E)a store of nectar that the wasp can use in time of famine
Q2) What effects would occur in a mutant of Arabidopsis that cannot synthesize GABA within its flowers?
A)Pollen tube growth would not be directed toward the egg, and fertilization would not occur.
B)The seeds from the flowers would be unable to break dormancy.
C)The pollen grain would not form a pollen tube due to incompatibility with the pollen tube.
D)The length of the style would be increased to the point where the growing pollen tube would be unable to reach the synergids.
To view all questions and flashcards with answers, click on the resource link above.
Page 40
Chapter 39: Plant Responses to Internal and External
Signals
Available Study Resources on Quizplus for this Chatper
137 Verified Questions
137 Flashcards
Source URL: https://quizplus.com/quiz/19795
Sample Questions
Q1) In lettuce seeds,blue light initiates germination.If you measured hormone levels within the seed,which hormone would be produced upon exposure to blue light?
A)gibberellin
B)ethylene
C)abscisic acid
D)cytokinins
Q2) Which of the following plant hormones would most likely be found in high concentrations in a mature,slightly overripe fruit?
A)auxins and cytokinins
B)auxins and abscisic acid
C)gibberellins and cytokinins
D)cytokinins and ethylene
E)abscisic acid and ethylene
Q3) A short-day plant will flower only when
A)days are shorter than nights.
B)days are shorter than a certain critical value.
C)nights are shorter than a certain critical value.
D)nights are longer than a certain critical value.
E)days and nights are of equal length.
Page 41
To view all questions and flashcards with answers, click on the resource link above.
Chapter 40: Basic Principles of Animal Form and Function
Available Study Resources on Quizplus for this Chatper
98 Verified Questions
98 Flashcards
Source URL: https://quizplus.com/quiz/19796
Sample Questions
Q1) The fish likely died because
A)the fish was not given an adaptation period to adjust to the different water temperature.
B)the fish was not given an acclimation period to adjust to the different water temperature.
C)the fish lost too much heat via evaporation to the surrounding water.
D)the fish was not given an acclimatization period to adjust to the different water temperature.
E)the fish was endothermic.
Q2) In mammals this response is known as fever,but it is known to raise body temperature in other bacterially infected animals,including lizards,fishes,and cockroaches.
A)growth of hair on the limbs
B)reduced metabolic rate
C)sweating from skin glands
D)a change in the body's thermostat "set point"
E)decreased thermogenesis in brown fat
To view all questions and flashcards with answers, click on the resource link above.
42
Chapter 41: Animal Nutrition
Available Study Resources on Quizplus for this Chatper
87 Verified Questions
87 Flashcards
Source URL: https://quizplus.com/quiz/19797
Sample Questions
Q1) When the digestion and absorption of organic molecules results in more energy-rich molecules than are immediately required by an animal,the excess is
A)eliminated in the feces.
B)stored as starch in the liver.
C)stored as glycogen in the liver and muscles.
D)oxidized and converted to ATP.
E)hydrolyzed and converted to ADP.
Q2) Because adult lampreys attach onto the surface of large fish for long periods of time to feed on body fluids,they can accomplish nutritional balance without need for a A)liver.
B)pancreas.
C)intestine.
D)stomach.
E)gallbladder.
To view all questions and flashcards with answers, click on the resource link above. Page 43
Chapter 42: Circulation and Gas Exchange
Available Study Resources on Quizplus for this Chatper
112 Verified Questions
112 Flashcards
Source URL: https://quizplus.com/quiz/19798
Sample Questions
Q1) The semilunar valves of the mammalian heart
A)are the route by which blood flows from the atria to the ventricles.
B)are found only on the right side of the heart.
C)are the attachment site where the pulmonary veins empty into the heart.
D)prevent backflow of blood in the aorta and pulmonary arteries.
E)are at the places where the anterior and posterior venae cavae empty into the heart.
Q2) A portal system is
A)an area connecting arterioles to venules.
B)a series of vessels that returns blood to the heart in an animal with an open circulatory system.
C)a space within or between organs where blood is allowed to pool.
D)a slightly muscular vessel that has minimal pumping action in an organism with no heart.
E)a vessel or vessels connecting two capillary beds.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 43: The Immune System
Available Study Resources on Quizplus for this Chatper
123 Verified Questions
123 Flashcards
Source URL: https://quizplus.com/quiz/19799
Sample Questions
Q1) T cells have antigen receptors that
A)are active only in lymph nodes.
B)bind only to antigens present on the surface of the invading/foreign cells.
C)bind only to freely dissolved antigens in the plasma.
D)bind to antigens presented on major histocompatability complexes by host cells.
E)bind to antigens that are either freely dissolved or present on the surface of invading/foreign cells.
Q2) CD4 and CD8 are
A)proteins secreted by antigen-presenting cells.
B)receptors present on the surface of natural killer (NK)cells.
C)T-independent antigens.
D)molecules present on the surface of T cells where they interact with MHC molecules.
E)molecules on the surface of antigen-presenting cells where they enhance B cell activity.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 44: Osmoregulation and Excretion
Available Study Resources on Quizplus for this Chatper
91 Verified Questions
91 Flashcards
Source URL: https://quizplus.com/quiz/19800
Sample Questions
Q1) When stimulated by aldosterone,the reabsorption of Na is increased along
A)the loop of Henle.
B)the collecting duct.
C)Bowman's capsule.
D)the proximal tubule.
E)the distal tubule.
Q2) Birds that live in marine environments and thus lack access to fresh drinking water
A)osmoregulate without using a transport epithelium for this purpose.
B)drink sea water and secrete excess ions through their kidneys only.
C)drink sea water and secrete excess ions mainly through their nasal salt glands.
D)have plasma that is isoosmotic to ocean water.
E)obtain water by eating only osmoregulating prey.
Q3) The osmolarity of human urine
A)can be four times as great as normal osmolarity of human plasma.
B)is always exactly equal to plasma osmolarity.
C)is always less than plasma osmolarity.
D)is always greater than plasma osmolarity.
E)is determined primarily by the concentration of glucose.
To view all questions and flashcards with answers, click on the resource link above. Page 46
Chapter 45: Hormones and the Endocrine System
Available Study Resources on Quizplus for this Chatper
92 Verified Questions
92 Flashcards
Source URL: https://quizplus.com/quiz/19801
Sample Questions
Q1) Steroid and peptide hormones typically have in common
A)the building blocks from which they are synthesized.
B)their solubility in cell membranes.
C)their requirement for travel through the bloodstream.
D)the location of their receptors.
E)their reliance on signal transduction in the cell.
Q2) Hormones that promote homeostasis
A)are not found as members of antagonistic signalling mechanisms.
B)travel to target cells without passage in the plasma.
C)utilize receptors that bind any hormone.
D)initiate signal transduction in the target cell without binding to receptors.
E)usually operate as part of a negative feedback system.
Q3) Oxytocin and antidiuretic hormone are synthesized in the A)hypothalamus.
B)adenohypophysis.
C)anterior pituitary.
D)adrenal cortex.
E)posterior pituitary.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 46: Animal Reproduction
Available Study Resources on Quizplus for this Chatper
104 Verified Questions
104 Flashcards
Source URL: https://quizplus.com/quiz/19802
Sample Questions
Q1) In the above figure,which letter points to the prostate gland?
A)A
B)B
C)C
D)D
E)E
Q2) During human heterosexual (mutual)excitement,vasocongestion
A)occurs only in the penis.
B)occurs only in the testes.
C)occurs only in the clitoris.
D)occurs only in the upper vagina.
E)occurs in the clitoris, vagina, and penis.
Q3) The use of birth control pills (oral contraceptives)
A)reduces the incidence of ovulation.
B)prevents fertilization by keeping the sperm and egg physically separated by a mechanical barrier.
C)prevents implantation of an embryo.
D)prevents sperm from exiting the male urethra.
E)prevents oocytes from entering the uterus.
To view all questions and flashcards with answers, click on the resource link above.
Page 48
Chapter 47: Animal Development
Available Study Resources on Quizplus for this Chatper
106 Verified Questions
106 Flashcards
Source URL: https://quizplus.com/quiz/19803
Sample Questions
Q1) Which of the following is a correct description of an anatomical relationship?
A)The mesoderm gives rise to the notochord.
B)The endoderm gives rise to the hair follicles.
C)The ectoderm gives rise to the liver.
D)The mesoderm gives rise to the lungs.
Q2) The outer-to-inner sequence of tissue layers in a post-gastrulation vertebrate embryo is
A)endoderm ectoderm mesoderm.
B)mesoderm endoderm ectoderm.
C)ectoderm mesoderm endoderm.
D)ectoderm endoderm mesoderm.
E)endoderm mesoderm ectoderm.
Q3) In humans,identical twins are possible because
A)cytoplasmic determinants are distributed unevenly in unfertilized eggs.
B)extraembryonic cells interact with the zygote nucleus.
C)convergent extension occurs.
D)early blastomeres can form a complete embryo if isolated.
E)the grey crescent divides the dorsal-ventral axis into new cells.
To view all questions and flashcards with answers, click on the resource link above. Page 49
Chapter 48: Neurons,Synapses,and Signalling
Available Study Resources on Quizplus for this Chatper
93 Verified Questions
93 Flashcards
Source URL: https://quizplus.com/quiz/19804
Sample Questions
Q1) The excitatory effect of glutamate can be found in
A)postsynaptic cells.
B)the synapse
C)the glia.
D)axon hillocks.
E)the nodes of Ranvier.
Q2) The minimum graded depolarization needed to operate the voltage-gated sodium and potassium channels is indicated by the label
A)A)
B)B)
C)C)
D)D)
E)E)
Q3) Which is the correct order for processing and integrating sensory stimuli?
A)stimuli sensory neuron sensory nerve CNS PNS
B)stimuli sensory nerve sensory neuron PNS CNS
C)stimuli sensory neuron sensory nerve PNS CNS
D)stimuli sensory nerve sensory neuron CNS PNS
E)sensory nerve stimuli sensory neuron PNS CNS
To view all questions and flashcards with answers, click on the resource link above.
Page 50
Chapter 49: Nervous Systems
Available Study Resources on Quizplus for this Chatper
85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/19805
Sample Questions
Q1) An adolescent decides to take a risky jump from the roof into a shallow pool.This poorly assessed decision is indicative of a(n)
A)underdeveloped motor cortex.
B)absent motor cortex.
C)absent occipital lobe.
D)malfunctioning thalamus.
E)underdeveloped prefrontal cortex.
Q2) The stretch receptors of the sensory neurons in the human knee-jerk reflex are located in the
A)gastrocnemius muscle, in the calf.
B)cartilage of the knee.
C)quadriceps, the flexor muscles on the ventral side of the thighs.
D)hamstring, the extensor muscles on the dorsal side of the thighs.
E)brain, the sensorimotor relay.
Q3) The blood-brain barrier
A)is formed by tight junctions.
B)is formed by oligodendrocytes.
C)tightly regulates the intracellular environment of the CNS.
D)uses chemical signals to communicate with the spinal cord.
E)provides support to the brain tissue.
To view all questions and flashcards with answers, click on the resource link above. Page 51
Chapter 50: Sensory and Motor Mechanisms
Available Study Resources on Quizplus for this Chatper
106 Verified Questions
106 Flashcards
Source URL: https://quizplus.com/quiz/19806
Sample Questions
Q1) Sustained muscle contraction without relaxation between successive stimuli is called A)tonus.
B)tetanus.
C)an all-or-none response.
D)fatigue.
E)a spasm.
Q2) The perceived pitch of a sound depends on
A)which part of the tympanic membrane is being vibrated by sound waves.
B)which part of the oval window produces waves in the cochlear fluid.
C)which region of the basilar membrane was set in motion.
D)whether or not the sound moves the incus, malleus, and stapes.
E)the listener having had training in music.
Q3) Corneal surgery is now routinely performed to change the shape of the cornea and improve vision.Why is this surgery beneficial?
A)improves the circulation of nutrients to the eye
B)improves the focusing of light onto the retina
C)decreases the amount of light entering the eye
D)increases the sensitivity of the photoreceptors
E)decreases the pressure in the eye
To view all questions and flashcards with answers, click on the resource link above.
Page 52
Chapter 51: Animal Behaviour
Available Study Resources on Quizplus for this Chatper
91 Verified Questions
91 Flashcards
Source URL: https://quizplus.com/quiz/19807
Sample Questions
Q1) Upon observing a golden eagle flying overhead,a sentry prairie dog gives a warning call to other foraging members of the prairie dog community. A)A B)B
C)C
D)D
E)E
Q2) The proximate causes of behaviour are interactions with the environment,but behaviour is ultimately shaped by A)hormones.
B)evolution.
C)sexuality.
D)pheromones.
E)the nervous system.
To view all questions and flashcards with answers, click on the resource link above.
Page 53
Chapter 52: An Introduction to Ecology and the Biosphere
Available Study Resources on Quizplus for this Chatper
90 Verified Questions
90 Flashcards
Source URL: https://quizplus.com/quiz/19808
Sample Questions
Q1) Which of the following choices includes all of the others in creating global terrestrial climates?
A)differential heating of Earth's surface
B)ocean currents
C)global wind patterns
D)evaporation of water from ocean surfaces
E)Earth's rotation on its axis
Q2) Which of the following examples of an ecological effect leading to an evolutionary effect is most correct?
A)When seeds are not plentiful, trees produce more seeds.
B)A few organisms of a larger population survive a drought and then these survivors emigrate to less arid environments.
C)A few individuals with denser fur survive the coldest days of an ice age, and the reproducing survivors of the ice age all have long fur.
D)Fish that swim the fastest in running water catch the most prey and more easily escape predation.
E)The insects that spend the most time exposed to sunlight have the most mutations.
To view all questions and flashcards with answers, click on the resource link above.
Chapter 53: Population Ecology
Available Study Resources on Quizplus for this Chatper
89 Verified Questions
89 Flashcards
Source URL: https://quizplus.com/quiz/19809
Sample Questions
Q1) Which of the following statements does not apply to the logistic growth model?
A)(K-N)/K is the fraction of K that is available for population growth.
B)When the population is large, then (K-N)/K approaches 0.
C)When N = K, the per capita rate of increase is small.
D)The logistic model of population growth produces a sigmoid growth curve.
E)The model assumes that populations approach K smoothly.
Q2) Based on current growth rates,Earth's human population in 2050 will reach about A)2 million.
B)3 billion.
C)4 billion.
D)7 billion.
E)10 billion.
Q3) The human population
A)is no longer growing exponentially but still increasing rapidly.
B)is still growing exponentially, but is increasing slowly.
C)worldwide has reached its demographic transition.
D)and its carrying capacity can be estimated using age structure pyramids.
E)can keep increasing because technology will enable continuous growth.
To view all questions and flashcards with answers, click on the resource link above. Page 55
Chapter 54: Community Ecology
Available Study Resources on Quizplus for this Chatper
97 Verified Questions
97 Flashcards
Source URL: https://quizplus.com/quiz/19810
Sample Questions
Q1) What interactions exist between the cattle egret and grazing cattle?
A)+/+
B)+/o
C)+/-
D)o/o
E)-/-
Q2) During the course of the formation of a parasite/host relationship,a critical first step in this evolution would be
A)changing the behaviour of the host or intermediate host.
B)developing asexual reproduction.
C)deriving nourishment without killing the host.
D)starting as an ectoparasite and then later becoming an endoparasite.
E)utilizing heterotropic nutrition during infection and autotrophic nutrition during dormancy.
Q3) Keystone predators can maintain species diversity in a community if they
A)are the fastest predators.
B)prey on the community's dominant species.
C)maintain exponential growth.
D)avoid consuming omnivores.
To view all questions and flashcards with answers, click on the resource link above.
Page 56
Chapter 55: Ecosystems and Restoration Ecology
Available Study Resources on Quizplus for this Chatper
98 Verified Questions
98 Flashcards
Source URL: https://quizplus.com/quiz/19811
Sample Questions
Q1) When levels of CO are experimentally increased in a typical grassland community,C plants generally respond with a greater increase in productivity than C plants.This is because
A)C plants are more efficient in their use of CO .
B)C plants are able to obtain the same amount of CO by keeping their stomata open for shorter periods of time.
C)C plants don't use CO as their source of carbon.
D)C plants are more limited by CO availability because they lack mechanisms to prevent transpirational water loss.
E)C plants have special adaptations for CO uptake, such as larger stomata.
Q2) How is net ecosystem production (NEP)typically estimated in ecosystems?
A)the ratio of producers to consumers
B)the amount of heat energy released by the ecosystem
C)the net flux of CO or O in or out of an ecosystem
D)the rate of decomposition by detrivores
E)the annual total of incoming solar radiation per unit of area
To view all questions and flashcards with answers, click on the resource link above. Page 57
Chapter 56: Conservation Biology and Global Change
Available Study Resources on Quizplus for this Chatper
90 Verified Questions
90 Flashcards
Source URL: https://quizplus.com/quiz/19812
Sample Questions
Q1) We should care about loss in biodiversity in other species because of I. potential loss of medicines and other products yet undiscovered from threatened species.
II. potential loss of genes,some of which may code for proteins useful to humans.
III.the risk to global ecological stability.
A)only I
B)only II
C)only II and III
D)I, II, and III
Q2) What is the biggest problem with selecting a site for a preserve?
A)There is always a conflict about use of land set aside for preservation.
B)Making a proper selection is difficult because currently the environmental conditions of almost any site change so quickly.
C)Keystone species are difficult to identify in potential preserve sites.
D)Only lands that are not useful to human activities are available for preserves.
E)Most of the best sites are inaccessible by land transportation, so making roads to them is often prohibitively expensive.
To view all questions and flashcards with answers, click on the resource link above.