In both plant and animal cells , the membrane
a. produces enzymes
b. controls reproduction
c. is composed of sugars
d. regulates diffusion
Ans: d. regulates diffusion
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Interleukins are
A. produced by leukocytes. B. important in both innate and adaptive immunity. C. involved in directly killing tumor cells. D. protein molecules. E. produced by leukocytes AND protein molecules.
Which of the following groups consume animals?
a. carnivores and herbivores b. carnivores and omnivores c. omnivores and herbivores d. carnivores only e. herbivores only
Assuming one glucose molecule being metabolized, what is the net yield of ATP in the mitochondria under aerobic
conditions? a. 1 b. 2 c. 32 d. 34 e. 36
Two species of frogs belonging to the same genus occasionally mate, but the offspring do not complete development. What is the mechanism for keeping the two frog species separate?
A) the postzygotic barrier called hybrid inviability B) the postzygotic barrier called hybrid breakdown C) the prezygotic barrier called hybrid sterility D) gametic isolation E) adaptation