For each statement, indicate whether it is True or False. If you choose False, briefly explain why the statement is incorrect. True or false. Secondary consumers have more energy or power than do primary consumers
What will be an ideal response?
false
Reasoning: Answers will vary.
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If there are 100 individuals in a population and 20 are homozygous for B, 60 are heterozygous, and 20 are homozygous for b, what is the allele frequency of B?
A. 20% B. 40% C. 50% D. 80% E. It can't be calculated from this information.
Dopamine derived from the hypothalamus is the prominent hormone controlling pituitary prolactin secretion. Dopamine inhibits prolactin secretion. What do you predict would happen if the pituitary were removed from the base of the brain and transplanted to some distant place in the body (for instance on top of the kidney), such that dopamine could no longer regulate prolactin secretion? You can
assume that the transplanted pituitary will be exposed to a ready supply of blood vessels. A. Dopamine secretion would increase. B. Dopamine secretion would decrease. C. Prolactin secretion would decrease. D. Prolactin secretion would increase. E. Both dopamine and prolactin secretion would decrease.
A researcher is looking for met- strains. He/she compares two plates. One plate has colonies growing
on complete medium. The other plate has colonies growing on methionine deficient medium. How can the researcher determine which colonies are met-?
a. The colonies growing on the methionine plate are met-. b. met- colonies grow on the complete medium but do not grow on the plate lacking methionine. c. We cannot determine which colonies are met- because we do not have enough information. d. Only the colonies growing on the complete medium are met-. e. met- colonies grow on the plate lacking methionine but do not grow on the complete medium.
An increase in infant mortality will _____ a population's replacement fertility rate
a. raise c. not affect b. lower