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FOR
BIOLOGICALSCIENCE N
TextbookAuthors n
ScottFreeman,Universityof Washington
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MichaelHarrington,UniversityofAlberta
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Joan Sharp, Simon Fraser University
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,BiologicalScience,CanadianEdition.,2e(Freemanetal.) Chapter 1 n n n n n n n n n
nBiology and the Tree of Life n n n n n
1) The pattern component of the cell theory claims that all organisms consist of cells.
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A) true
B) false
Answer: A
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Reference: Section 1.1 Bloom's n n n
Level: Remembering
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LOs: Chp1-2. Describe the two components of the cell theory.
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2) How does a scientific theorydiffer from a scientific hypothesis?
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A) There is no difference—the terms are interchangeable. n n n n n n
B) Atheoryis an explanation for averygeneral phenomenon orobservation; hypotheses treat more
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specific observations.
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C) Ahypothesis is an explanation for averygeneral phenomenon; theories treat more specific issues.
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D) Theories definescientific laws;hypotheses are usedtoset up experiments. n n n n n n n n n n
Answer: B
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Reference: Section 1.1 n n
Bloom's Level: Comprehension n n
LOs: Chp1-2. Describe the two components of the cell theory.
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3) Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures
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similar to stems, leaves, and roots. Reproduction occurs when adults produce sperm and eggs that fuse
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to form offspring. Each adult Caulerpa, however, consists of just a single cell. Which of the following
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statements is true?
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A) Caulerpa violate the pattern component of the cell theory—that all organisms consist of cells. n n n n n n n n n n n n n
B) Caulerpaviolate theprocess component of the cell theory—that all cells comefrom n n n n n n n n n n n n
preexisting cells.
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C) Caulerpaviolate both the pattern and process components of the cell theory. n n n n n n n n n n n
D) TheexistenceofCaulerpa isconsistent withthecell theory.
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Answer: D
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Reference: Section 1.1 n n
Bloom's Level: Comprehension n n
LOs: Chp1-2. Describe the two components of the cell theory.
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4) Which statement about spontaneous generation is FALSE? n n n n n n
A) Pasteurdemonstrated that it does not occur under normal laboratoryconditions.
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B) It apparentlyoccurred at least once–when life on Earth began.
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C) It occurs everytime a new species evolves from a preexisting species.
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D) It addressesthe formation oflivingcells from previouslynonlivingmaterial.
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Answer: C
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Reference: Section 1.1 Bloom's n n n
Level: Remembering
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LOs: Chp1-2. Describe the two components of the cell theory.
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,5) Recall Pasteur's experiment on spontaneous generation. Originally, he used sealed and unsealed
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flasks instead of swan-necked and unsealed flasks. Critics claimed that the experiment was
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inconclusive. Which of the followingcriticisms would beaddressed byusingaswan-necked flask
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instead of the sealed flask?
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A) The broth was heated too intensively.
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B) Therehad not been enough time for spontaneous generation to occur.
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C) Fresh air is required for spontaneous generation.
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D) Thebrothwasnotnutritiousenough.
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Answer: C
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Reference: Section 1.1 n n
Bloom's Level: Comprehension/Applying
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LOs: Chp1-2. Describe the two components of the cell theory.
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6) Which of the following is the best example of a heritable variation?
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A) skin cancer n
B) amputation
C) red hair n
D) loveformusic n n
Answer: C
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Reference: Section 1.2 n n
Bloom's Level: Comprehension n n
LOs: Chp1-1. Name five fundamental characteristics shared byall living organisms.
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7) How does artificial selection differ from natural selection?
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A) Artificial selection occurs onlyin computer simulations, not with actual organisms.
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B) Artificial selection is based on conscious choices byhumans.n n n n n n n n
C) Artificial selection occurs only with plants. n n n n n
D) Artificialselection isnot basedon heritablevariation, buton newmutations.
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Answer: B
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Reference: Section 1.2 n n
Bloom's Level: Comprehension n n
LOs: Chp1-3. Brieflyexplain the theoryof natural selection, and clarifythe two conditions that are
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necessary and sufficient for natural selection to bring about evolutionary change in a population.
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, 8) Over the past several decades, natural selection has caused populations of Staphylococcus aureus
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(an infectious wound bacterium) to evolve resistanceto most antibiotics. If antibiotic use were stopped,
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what would you predict would happen to these S. aureus populations?
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A) Theywill go extinct without the antibiotic.
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B) Thepopulations will begin colonizing new environments.
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C) The frequencyof nonresistant forms will increase in these populations.
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D) Thefrequencyof resistant forms will definitelyincreasein thesepopulations.
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Answer: C
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Reference: Section 1.2 Bloom's n n n
Level: Applying
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LOs: Chp1-3. Brieflyexplain the theoryof natural selection, and clarifythe two conditions that are
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necessary and sufficient for natural selection to bring about evolutionary change in a population.
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9) Environments all over the world arechanging as a result of global warming. Could this n n n n n n n n n n n n n n
influence natural selection?
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A) No. The environment is always changing. Global warmingis nothing new.
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B) Yes. Traits thathelp individualsproducemoreoffspringinwarmerenvironmentswill
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increase in frequency.
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C) No. The onlychange will be that species from hot environments will expand their ranges.
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D) Yes.Mutationsoccurmorefrequentlyinhotenvironments.
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Answer: B
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Reference: Section 1.2 Bloom's n n n
Level: Applying
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LOs: Chp1-3. Brieflyexplain the theoryof natural selection, and clarifythe two conditions that are
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necessary and sufficient for natural selection to bring about evolutionary change in a population.
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10) The "heat" in chili peppers is due to a molecule called capsaicin. Suppose you breed chili peppers
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that havelow amounts of capsaicin over manygenerations in order to makethem milder (have less
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capsaicin). What process is occurring?
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A) heritablevariation n
B) environmental change n
C) naturalselection n
D) artificialselection n
Answer: D
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Reference: Section 1.2 n n
Bloom's Level: Comprehension/Remembering n n
LOs: Chp1-3. Brieflyexplain the theoryof natural selection, and clarifythe two conditions that are
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necessary and sufficient for natural selection to bring about evolutionary change in a population.
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