If all the individuals in the threatened population die, this would be described as __________
a. extinction
b. local extinction
c. mass extinction
d. adaptation
B
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You are doing research on rodent populations in a cornfield at night and are hearing popping noises. Your research assistant is getting scared. Having taken biology, you can explain to your assistant that the popping sound is due to
A. the apical meristem cells in the corn stalks elongating. B. the developing of the kernels of corn on the ears of the corn stalks. C. the expansion of the lateral meristems increasing the girth of the corn stalk. D. the growth of the intercalary meristems inside the corn stalk. E. the development of the tassels on top of the corn stalk.
Magnesium has 12 protons. How many electrons are
in its first energy level? a. 2 b. 4 c. 6 d. 8 e. 10
What could be said of our sense of taste?
a) How we define what tastes good or bad is fundamentally a learned behavior. b) There is no accounting for taste in evolution. c) Individuals have widely different tastes that contributes to the variety of our species. d) Taste is a matter of arbitrary preference. e) What tastes good to us is dictated by our nutritional needs.
What would happen to a plant that is treated with a chemical that prevents electrons from moving through the electron transport chain?
A. It could not produce NADP+. B. Water would be broken down to form oxygen at a higher rate to compensate. C. It could no longer produce CO2. D. More electrons would be available for the light harvesting array. E. It could not generate an electrochemical H+ gradient across a membrane.