BSC 101 Final exam Questions and answers Updated RATED A+

BSC 101 Final exam Questions and answers
Updated RATED A+
1. Describe the ways in which the scientific method is inadequate at describing what science is - Correct
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Answers Oversimplified, implies one experiment can answer a research question, science is not linear,
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implies it's an independent effort, ignore technology and society
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II! 2. Explain why the claim that evolutionary theory is "just a theory" reflect incorrect understanding of
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II! what science is - Correct Answers A theory is an explanation that can be used to explain a broad set of
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II! phenomena. It is evidence based, has many hypothesis to show that it is true, has data to back it up, is
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II! predictive, inclusive. The evolutionary theory cannot be proven but through data, fossil, and other
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II! experiments done by many scientists there is an overwhelming amount of evidence. II! II! II! II! II! II! II! II! II! II! II!




II! 3. Explain how community feedback is provided to scientists through peer review of their scientific
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II! investigations - Correct Answers -Critics and fact checkers II! II! II! II! II! II! II! II! II! II! II! II!




-Watch for bias and fraud II! II! II! II!




-Mutual motivation II!




-Sees if claims are strong as the evidence
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II! 4. Identify the properties that are shared by all life as we know it - Correct Answers 1. Have organized
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II! structures made of at least one cell, 2. Responds to stimuli, 3. Reproduces, 4. Evolve through adaptation
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II! by natural selection, 5. Grow and develop, 6. Maintain homeostasis, 7. Process energy
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5. Distinguish between prokaryotes and eukaryotes - Correct Answers Prokaryotes- Single-celled
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organisms that lack organelles surrounded by a membrane and don't have nuclei surrounded by nuclear
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membranes (bacteria and archaea); Eukaryotes- Organisms with cells that have nuclei and membrane-
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bound organelles (Eurkarya- animals & plants)
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II! 6. Distinguish between scientific explanations of evolution and explanations that reflect common
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II! misconceptions about evolution - Correct Answers a) Evolution is just a theory II! II! II! II! II! II! II! II! II! II! II! II! II! II! II! II!




b) Individual organisms can evolve
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c) Evolution explains the origin of life
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d) Organisms evolve on purpose of if they're smart enough
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, e) Evolution is controversial among scientists (ITS NOT)
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f) Other "theories" should be taught
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g) Evolution and religion are compatible
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i) fossil evidence
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ii) morphological homology
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iii) molecular homology
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iv) distribution of organisms/fossils
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v) chronologyII!




II! 7. Explain how natural selection happens - Correct Answers a) Genetic variation in a population
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b) Differential reproduction
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c) Heredity II!




d) Change across generations in:
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i) Gene pool
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ii) Phenotypes
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iii) Population's mean fitness
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II! 8. Identify the role of mutation in evolution - Correct Answers ALL of the genetic variation we observe
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II! in populations originally arose through a mutation. Relate to natural selection.
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a) No change in phenotype
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b) Benefit- increased fitness
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c) Negative- decreased fitness
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II! 9. Explain how speciation happens - Correct Answers When one species becomes two different species.
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II! when one species diverges into two because a portion of the species becomes unable to reproduce with
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II! the rest of the species
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a) Allopatric speciation- "Other homelands;" involves a geographic of populations from a parent species
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and subsequent evolution
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b) Sympatric speciation- "Same homeland;" involves speciation occurring within a parent species while
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remaining in one location
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