Life Science
Mock Exam
Course Introduction
Life Science is the study of living organisms and life processes, encompassing various fields such as biology, genetics, ecology, microbiology, and physiology. This course introduces students to fundamental concepts including cell structure and function, heredity and evolution, ecosystems, and the diversity of life forms. Emphasis is placed on scientific methods, laboratory techniques, and the relevance of life science to real-world issues such as health, environment, and biotechnology. Through lectures, laboratory experiments, and interactive activities, students gain a foundational understanding of how living systems operate and interact within their environments.
Recommended Textbook
Biology The Core 1st Edition by Eric J. Simon
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Chapter 1: An Introduction to the Science of Life
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Sample Questions
Q1) The gasoline that fuels a car has a substantial amount of energy inside of it.What was the original source of that energy?
A)Oil
B)Decaying plants and animals
C)Living plants and animals
D)The sun
Answer: D
Q2) The scientific method ________.
A)is a rigid methodology that must be precisely followed to ensure validity
B)is a rough recipe for answering questions,but the steps need not be performed in the same order as outlined nor must every step be performed every time
C)is only undertaken by trained scientists in a controlled laboratory setting
D)is the means by which absolute truth can be uncovered
Answer: B
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Chapter 2: The Chemistry of Life
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Sample Questions
Q1) If you remove all of the functional groups from an organic molecule such that it contains only carbon and hydrogen atoms,the molecule is called ________.
A)a carbohydrate
B)an inorganic molecule
C)a hydrocarbon
D)polar
Answer: C
Q2) Why is one side of a water molecule partially negative while the other side is partially positive?
A)Uneven sharing of electron pairs occurs due to the strong pull of hydrogen.
B)Uneven sharing of electron pairs occurs due to the strong pull of oxygen.
C)Oxygen donates its electrons to hydrogen.
D)Hydrogen donates its electrons to oxygen.
Answer: B
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Chapter 3: The Cell: The Fundamental Unit of Life
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Sample Questions
Q1) What harvests energy from sunlight to rearrange molecules into sugar?
A)Chloroplasts
B)Mitochondria
C)Nucleus
D)Lysosome
Answer: A
Q2) What does the lowercase "r" in rRNA stand for?
A)Ribose
B)Replacement
C)Ribosomal
D)Reticulum
Answer: C
Q3) Vitamin C is required to produce collagen.What is collagen and what would be the symptoms of a vitamin C deficiency?
Answer: Collagen is the primary protein used to make the connective tissue that holds us together and repairs wounds.Collagen is also a key component of bone.A vitamin C deficiency (called scurvy)would therefore result in slow wound healing and overall fragility.
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Chapter 4: Energy and Life
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Sample Questions
Q1) Organize the following steps of the light reaction in order.
A)Absorb sunlight,produce high-energy electron carriers,produce oxygen,split water
B)Absorb sunlight,produce high-energy electron carriers,split water,produce oxygen
C)Absorb sunlight,split water,produce oxygen,produce high-energy electron carriers
D)Absorb sunlight,produce oxygen,split water,produce high-energy electron carriers
Q2) What is the role of light in photosynthesis?
A)It is the source for electrons.
B)It fixes carbon.
C)It energizes electrons.
D)It splits ATP molecules,which generates energy.
Q3) What does it mean to "fix" carbon and during which stage of photosynthesis is carbon fixed?
Q4) Why can't an aerobic bacterium produce as much energy from a gram of sugar as an animal cell?
Q5) What color of light is not used for photosynthesis? How could you know this just by looking at a leaf?
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Chapter 5: Chromosomes and Inheritance
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Sample Questions
Q1) A single,continuous molecule of DNA plus its associated proteins is called a
A)centromere
B)gene
C)chromosome
D)genome
Q2) What was the probability that Deirdre and Geoff's first child would be a girl and express the albino trait?
A)1/4
B)1/2
C)1/8
D)3/4
Q3) The offspring produced via sexual reproduction are genetically ________ to the parents.
A)indifferent
B)identical
C)parsimonious
D)unique
Q4) Why are individuals with Turner syndrome always female and individuals with Klinefelter syndrome always male?
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Chapter 6: DNA: The Molecule of Life
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Sample Questions
Q1) How does a cell typically know when to divide?
A)They have an internal clock and only divide when they reach a certain age.
B)Tumor suppressor genes code for growth factor proteins that initiate cell division.
C)Proto-oncogenes code for growth factor proteins that initiate cell division.
D)Oncogenes code for growth factor proteins that initiate cell division.
Q2) According to the base pairing rules of DNA,if the sequence of bases on one strand was AGGCTTA,what would be the sequence of bases on the complementary strand?
A)AGGCTTA
B)ATTCGGA
C)CGGATTC
D)TCCGAAT
Q3) Will the clone be sterile or fertile?
A)Sterile
B)Fertile
C)It depends on whether it is male or female.
Q4) Restriction enzymes were originally isolated from bacteria who used them to protect themselves from viruses.How might a restriction enzyme defeat a virus?
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Chapter 7: Darwinian Evolution
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Sample Questions
Q1) Which grouping includes all of the protists?
A)Domain Archaea
B)Domain Eukarya
C)Kingdom Animalia
D)Kingdom Plantae
Q2) Which of the following are considered to be fossils?
A)Footprints or other impressions preserved in stone
B)Mineralized bones
C)Animals frozen in ice or preserved in amber
D)All of these
Q3) Which classification grouping includes the greatest number of species?
A)Domain
B)Order
C)Phylum
D)Kingdom
Q4) The older fossils are typically found in the ________ sediments.
A)upper
B)lower
C)coarser
D)finer
Page 9
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Chapter 8: Biodiversity 1: Microscopic Organisms
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Sample Questions
Q1) By what means do bacterial cells typically divide?
A)Binary fission
B)Mitosis
C)Meiosis
D)Regeneration
Q2) What do the nucleus and the smooth endoplasmic reticulum have in common?
A)They both detoxify chemical toxins.
B)They both synthesize lipids.
C)They both contain DNA.
D)Their membranes are interconnected.
Q3) An infectious circular piece of RNA is the ________.
A)virus
B)prion
C)viroid
D)capsid
Q4) HIV,the virus that causes AIDS in humans,does not infect other animals,but only certain cells in the human body.Why?
Q5) Describe all the possible forms of nucleic acids found in viruses.
Q6) Why could prokaryotes survive without eukaryotes but eukaryotes could not survive without prokaryotes?
Page 10
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Chapter 9: Biodiversity 2: Fungi and Plants
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Sample Questions
Q1) Which plant typically has parallel leaf veins and a fibrous root system?
A)Monocot
B)Dicot
C)Conifer
D)Legume
Q2) If you were to observe a flower that lacked petals,fragrance,or nectar,what might you conclude is the pollinator?
A)Ants
B)Wind
C)Bees
D)Moths
Q3) Imagine you were driving westward on a road in a wooded area.If ferns were growing in the area,which side of the road would they most likely be growing and why wouldn't they be growing as well on the other side?
Q4) What do charophytes and bryophytes have in common?
A)Roots
B)Lignin
C)Live on land
D)None of these
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Chapter 10: Biodiversity 3: Animals
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Sample Questions
Q1) Which group of fishes evolved first?
A)Ray-finned fishes
B)Lobe-finned fishes
C)Cartilaginous fishes
D)Jawless fishes
Q2) Gastropods include the ________.
A)clams and oysters
B)snails and slugs
C)squid and octopi
D)scallops and nautiluses
Q3) Parasites have often been described incorrectly as having "devolved" from a more highly evolved organism.Why would it be more accurate to say that they are just as evolved as any other organism?
Q4) What do the nonanthropoid primates have in common?
A)Live in trees
B)Grasping tails
C)Nocturnal
D)All are traits common to the nonanthropoid primates.
Q5) How might an early primate's environment lead to the evolution of a large brain in relation to body size?
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Chapter 11: Human Body Systems
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Sample Questions
Q1) Sound is "heard" when sound waves cause structures inside your ears to physically vibrate.A signal is then sent to your brain where it is interpreted as sound.What type of receptors in the ear are responsible for the sense of hearing?
A)Chemoreceptors
B)Electromagnetic receptors
C)Mechanoreceptors
D)Thermoreceptors
Q2) Genital herpes is a sexually transmitted disease caused by a ________. A)virus
B)bacteria
C)fungus
D)protist
Q3) What type of disorder is AIDS?
A)Autoimmune disease
B)Allergic reaction
C)Immune rejection
D)Immunodeficiency
Q4) Of the four chambers of the human heart,which has the thickest walls and why?
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Chapter 12: Ecology
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Sample Questions
Q1) The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession.
A)primary
B)ecological
C)opportunistic
D)secondary
Q2) What is the term used to describe relatively small areas with unusually high concentrations of species found there and nowhere else,including many species in high risk of extinction? These areas receive the focus of global conservation efforts.
A)Natural wildlife reserve
B)Biodiversity hot spot
C)Protective wilderness refuge
D)Protective conservation zone
Q3) "Ecology" is best defined as the study of ________.
A)the relationships between parasites and their hosts
B)the interactions between living organisms and their environments
C)plant succession
D)interactions between predator and prey populations
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