Biology+3361+‐+Coastal+Marine

Biology+3361+‐+Coastal+Marine - Name Biology...

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Name Biology 1001 – Introductory Biology Final Examination December 9, 2006 Instructions 1. This exam consists of 18 pages (including this one). Be sure that you have them all. 1
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Name Part A. Multiple choice questions. 1) What is the most important missing evidence or observation in Darwin's theory of 1859? A) the source of genetic variation B) evidence of the overproduction of offspring C) evidence that some organisms became extinct D) observation that variation is common in populations E) observation that competition exists in populations 2) The ________ is the bacterial structure that acts as a selective barrier, allowing nutrients to enter the cell and wastes to leave the cell. A) plasma membrane B) ribosome C) cell wall D) nucleoid region E) pili 3) How do different contraceptive methods work? A) prevent the release of sperm and eggs B) keep sperm and eggs separated C) prevent implantation of an embryo D) A and B only E) A, B, and C 4) What is generally true of two sibling species? A) They shared a common ancestor recently in evolutionary time. B) Genes are unable to pass from one sibling species' gene pool to the other's. C) They are unable to produce hybrid offspring upon interbreeding. D) Their reproductive isolation from each other is complete. E) They are the result of anagenesis. 5) Which factor is the most important in producing the variability that occurs in each generation of humans? A) mutation B) sexual recombination C) genetic drift D) nonrandom mating E) natural selection 6) How would the dispersion of humans in the Canada best be described? A) dense B) clumped C) random D) intrinsic E) uniform 7) If all the bacteria on Earth suddenly disappeared, which of the following would be the most likely and most direct result? A) The number of organisms on Earth would decrease by 10-20%. B) Human populations would thrive in the absence of disease. C) There would be little change in Earth's ecosystems. D) The recycling of nutrients would be greatly reduced, at least initially. E) There would be no more pathogens on Earth. 8) Which of the following statements about bacterial cell walls is false? A) Bacterial cell walls differ in molecular composition from plant cell walls. B) Cell walls prevent cells from bursting in hypotonic environments. C) Cell walls prevent cells from dying in hypertonic conditions. D) Bacterial cell walls are similar in function to the cell walls of many protists, fungi, and plants. E) Cell walls provide the cell with a degree of physical protection from the environment. 2
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Name 9) What is the term for a top predator that contributes to the maintenance of species diversity among its animal prey? A) keystone species B) keystone mutualist C) landscape species D) primary consumer E) tertiary consumer 10) Which of the following pairs are homologous?
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This note was uploaded on 05/06/2010 for the course BIOLOGY 02541 taught by Professor Jcobs during the Spring '10 term at Wilson Tech.

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Biology+3361+‐+Coastal+Marine - Name Biology...

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