Which of the following has the LEAST effect on blood pressure in a young adult?
a. Temperature of the room
b. Position of the body
c. Level of conditioning
d. Supplemental vitamins
Ans: a. Temperature of the room
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Which of the following might be expected to increase as a result of predation?
A. competition among prey species B. the availability of resources and niches C. prey population densities D. niche divergence E. extinction of prey species due to competitive exclusion
Catabolism: Lecture summary
What will be an ideal response?
Before differentiation can begin during the processes of plant cell and tissue culture, parenchyma cells from the source tissue must
a. differentiate into procambium. b. undergo dedifferentiation. c. increase the number of chromosomes in their nuclei. d. enzymatically digest their primary cell walls. e. establish a new polarity in their cytoplasm.
Encapsulation of a hypercycle would not be favored when:
a. the costs of a membrane exceed the benefits of the cycle. b. the membrane provides a defensive mechanism. c. natural selection favor mutations in component members. d. RNA components act through molecular mutualism.