Principles of Biology Exam
Answer Key
Course Introduction
Principles of Biology introduces students to the foundational concepts of the biological sciences, emphasizing the structure, function, and diversity of living organisms. The course covers key topics including cell biology, genetics, evolution, ecology, and the physiology of plants and animals. Through lectures, laboratory experiments, and discussions, students explore the scientific method, cellular processes, inheritance patterns, natural selection, and ecological interactions, equipping them with a comprehensive understanding of biological principles and their application to real-world issues.
Recommended Textbook
Biology The Core 2nd Edition by Eric J. Simon
Available Study Resources on Quizplus
12 Chapters
718 Verified Questions
718 Flashcards
Source URL: https://quizplus.com/study-set/2091
Page 2
Chapter 1: An Introduction to the Science of Life
Available Study Resources on Quizplus for this Chatper
51 Verified Questions
51 Flashcards
Source URL: https://quizplus.com/quiz/41669
Sample Questions
Q1) Certain parasites,such as intestinal tapeworms,cannot survive outside of the host.Why are they still considered alive?
A) Survival outside of a host is not a requirement for life.
B) They are still considered alive because they are studied by biologists, and biology is the study of life.
C) As long as they are made of cells, they are considered to be alive.
D) Because they cannot survive outside of the host, parasites are not considered alive.
Answer: A
Q2) Based on the table above,which type of cookie was the heaviest?
A) Cookies with the most fat
B) Cookies with intermediate amount of fat
C) Cookies with the least fat
D) The amount of fat did not affect the weight of cookies
Answer: A
Q3) To obtain large,flat cookies,one should use more fat in a recipe.
A)True
B)False
Answer: True
To view all questions and flashcards with answers, click on the resource link above.
Chapter 2: The Chemistry of Life
Available Study Resources on Quizplus for this Chatper
56 Verified Questions
56 Flashcards
Source URL: https://quizplus.com/quiz/41670
Sample Questions
Q1) Penicillin is a competitive inhibitor produced by a fungus in order to kill invading bacteria.It does this by mimicking the substrate required by the bacterium to build and repair its cell wall.Describe how mimicking the substrate would result in the death of the bacterium.
Answer: As a competitive inhibitor,it must bind to the active site of the bacterial enzyme where the correct substrate typically binds.Binding to the active site blocks the correct substrate from binding and prevents the correct products from being formed.Without these products,the bacterium cannot repair its cell wall and consequently dies.
Q2) All lipids are ________.
A) water-loving molecules
B) hydrophilic
C) hydrophobic
D) hydrolytic
Answer: C
To view all questions and flashcards with answers, click on the resource link above.
4
Chapter 3: The Cell: The Fundamental Unit of Life
Available Study Resources on Quizplus for this Chatper
56 Verified Questions
56 Flashcards
Source URL: https://quizplus.com/quiz/41671
Sample Questions
Q1) Which form of transport requires the expenditure of energy?
A) Facilitated diffusion
B) Active transport
C) Passive transport
D) Osmosis
Answer: B
Q2) How many layers of phospholipids make up the plasma membrane?
A) 1
B) 2
C) 3
D) 4
Answer: B
Q3) Which structure selectively regulates the transport of substances into and out of a plant cell?
A) The plasma membrane
B) The cell wall
C) The nucleus
D) The chloroplast
Answer: A
To view all questions and flashcards with answers, click on the resource link above.
Page 5
Chapter 4: Energy and Life
Available Study Resources on Quizplus for this Chatper
64 Verified Questions
64 Flashcards
Source URL: https://quizplus.com/quiz/41672
Sample Questions
Q1) Explain why mitochondria are often called "the powerhouse of the cell."
Q2) Explain how molecules other than glucose can be used as energy sources.
A) They can't; cellular respiration is limited to glucose.
B) They have their own unique metabolic pathways.
C) They are modified first and then enter the same metabolic pathway as glucose.
D) Fats, proteins, and other carbohydrates are similar enough to glucose that they utilize the same metabolic pathway without any modifications.
Q3) Predict how many molecules of carbon dioxide are produced from the mitochondrial "burning" of one molecule of glucose?
A) 1
B) 6
C) 12
D) Not enough information provided
Q4) Identify the stage (or stages)of cellular respiration that occurs entirely outside of the mitochondria.
A) Citric acid cycle
B) Electron transport chain
C) Glycolysis
D) All of the above
To view all questions and flashcards with answers, click on the resource link above. Page 6
Chapter 5: Chromosomes and Inheritance
Available Study Resources on Quizplus for this Chatper
66 Verified Questions
66 Flashcards
Source URL: https://quizplus.com/quiz/41673
Sample Questions
Q1) A test cross is performed to determine if a specific individual is a carrier.The results generate a 50/50 ratio of phenotypes.The test subject is therefore ________.
A) heterozygous
B) homozygous dominant
C) homozygous recessive
D) heterozygous dominant
Q2) Assuming codominance,if a homozygous red-flowered plant is crossed with a homozygous white-flowered plant,what will be the color of the offspring?
A) Red
B) White
C) Pink
D) Red and white
Q3) If genes are described as "sex linked," then they are ________.
A) typically on the X chromosome
B) typically on the Y chromosome
C) located next to one another
D) expressed only in women or only in men
Q4) Which phase of meiosis is most similar to mitosis,and why?
To view all questions and flashcards with answers, click on the resource link above.
Chapter 6: Dna: the Molecule of Life
Available Study Resources on Quizplus for this Chatper
64 Verified Questions
64 Flashcards
Source URL: https://quizplus.com/quiz/41674
Sample Questions
Q1) If DNA directs the production of RNA,what does RNA make?
A) RNA makes proteins.
B) RNA makes more DNA.
C) RNA makes membranes.
D) RNA makes hereditary molecules.
Q2) How many nucleotides are required to code for 10 amino acids?
A) 3
B) 10
C) 20
D) 30
Q3) True or false? Humans contain more genes in their genome than any other species on Earth.
A)True
B)False
Q4) Will the clone typically be sterile or fertile?
A) Sterile
B) Fertile
C) It depends on whether it is male or female.
Q5) How does chemotherapy kill cancer cells,and why might it also result in hair loss and nausea?
To view all questions and flashcards with answers, click on the resource link above. Page 8
Chapter 7: Darwinian Evolution
Available Study Resources on Quizplus for this Chatper
56 Verified Questions
56 Flashcards
Source URL: https://quizplus.com/quiz/41675
Sample Questions
Q1) What defines a geological time period known as an era?
A) Location of the continents
B) The distinct life forms that were present
C) Average global temperature
D) The eras represent equal divisions of time
Q2) What is the leading hypothesis for what might have brought about the extinction of the dinosaurs?
A) A new disease
B) Competition from mammals
C) An asteroid impact
D) Massive volcano eruptions
Q3) What contribution did Charles Lyell make?
A) He found some bird specimens on the Galapagos Islands.
B) He found some fossils of extinct species.
C) He suggested that life evolves through physical changes within the life span of an organism.
D) He provided the first evidence that the Earth is much older than was previously thought.
Q4) Explain how a complex trait,such as eyes or the ability to fly,can evolve by incremental modifications over time.
To view all questions and flashcards with answers, click on the resource link above. Page 9
Chapter 8: Biodiversity 1: Microscopic Organisms
Available Study Resources on Quizplus for this Chatper
58 Verified Questions
58 Flashcards
Source URL: https://quizplus.com/quiz/41676
Sample Questions
Q1) Why could prokaryotes survive without eukaryotes but eukaryotes could not survive without prokaryotes?
Q2) Nitrogen-fixing bacteria convert atmospheric nitrogen (N gas)into ammonium (NH ).Why is this conversion important for life on Earth?
A) Ammonium is an important cleaning agent.
B) Nitrogen gas is toxic.
C) Ammonium is a very important plant nutrient.
D) Nitrogen gas leads to global warming.
Q3) HIV,the virus that causes AIDS in humans,does not infect other animals,but only certain cells in the human body.Why?
Q4) Which viral life cycle would result in a quicker death for an infected cell?
A) Lytic cycle
B) Prophage cycle
C) Retroviral cycle
D) Lysogenic cycle
Q5) The protists are grouped together simply for convenience.Why are they not considered to be in a specific taxon such as a kingdom or a phylum?
Q6) Why is there no cure for prion-related diseases?
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Biodiversity 2: Fungi and Plants
Available Study Resources on Quizplus for this Chatper
58 Verified Questions
58 Flashcards
Source URL: https://quizplus.com/quiz/41677
Sample Questions
Q1) What do gymnosperms and angiosperms have in common?
A) Flowers
B) Seeds
C) Spores
D) None of these
Q2) Why must mosses live in moist environments?
A) Because they lack a waxy outer layer
B) Because they depend on water to reproduce
C) Because they grow as a mat
D) Because they are pollinated by fish and aquatic insects
Q3) What characteristic do plants,algae,and some bacteria have in common that is not shared with fungi or animals?
A) They have cell walls.
B) They can do photosynthesis.
C) They contain mycorrhizae.
D) They have spores.
Q4) Name four ways roots benefit a plant.
Q5) Most of our food crops come from angiosperms.
A)True
B)False
11
To view all questions and flashcards with answers, click on the resource link above.
Chapter 10: Biodiversity 3: Animals
Available Study Resources on Quizplus for this Chatper
56 Verified Questions
56 Flashcards
Source URL: https://quizplus.com/quiz/41678
Sample Questions
Q1) Which is most closely related to the hagfish?
A) Shark
B) Tunicate
C) Lamprey
D) Lancelet
Q2) Birds are a type of reptile.
A)True
B)False
Q3) Serial repetition of segments is a defining characteristic of which worm phylum?
A) Flatworms
B) Annelids
C) Roundworms
D) Segmentation is not a defining characteristic of any of the worm phyla.
Q4) Which evolved first,plants or animals? What evidence exists for your answer? Explain your reasoning as to why one would have evolved 100 million years prior to the other.
Q5) Roundworms are more closely related to arthropods than to flatworms.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above.
Page 12
Chapter 11: Human Body Systems
Available Study Resources on Quizplus for this Chatper
67 Verified Questions
67 Flashcards
Source URL: https://quizplus.com/quiz/41679
Sample Questions
Q1) Which is not a major protein found in muscles?
A) Actin
B) Myosin
C) Keratin
D) All are major proteins found in muscles.
Q2) An essential nutrient is specifically a nutrient that your body ________.
A) needs to grow
B) needs to function
C) cannot make by itself
D) cannot store
Q3) Which of the following statements about digestion is true?
A) Digestion occurs only in the stomach.
B) Digestion can be both mechanical and chemical, and it occurs both in the mouth and in the stomach.
C) Mechanical digestion occurs only in the stomach; chemical digestion occurs only in the mouth.
D) Digestion is the same thing as ingestion.
Q4) Describe what would happen if all of your skeletal muscles contracted at the same time.
Q5) Of the four chambers of the human heart,which has the thickest walls,and why?
Page 13
To view all questions and flashcards with answers, click on the resource link above.
Chapter 12: Ecology
Available Study Resources on Quizplus for this Chatper
66 Verified Questions
66 Flashcards
Source URL: https://quizplus.com/quiz/41680
Sample Questions
Q1) How might the removal of a wetland affect a nearby city?
A) Wetlands cause flooding.
B) Wetlands reduce flooding.
C) Wetlands reduce water quality.
D) Wetlands support a rich supply of nutrients.
Q2) An age pyramid with a broad base that quickly slopes up to a narrow top would be indicative of ________.
A) an industrialized nation
B) a developing nation
C) a population with a high average age
D) a population with a low survivorship of children
Q3) All living things need carbon.How does carbon enter the living portion of an ecosystem?
A) Atmospheric CO taken in by photosynthesis
B) Atmospheric CO taken in by soil bacteria
C) Elemental carbon taken in by plant roots
D) Elemental carbon taken in by plant leaves
Q4) Describe two ways (immediate and long term)in which burning a forest leads to an increase in atmospheric greenhouse gases.
To view all questions and flashcards with answers, click on the resource link above. Page 14