What powers the ATP synthase enzyme in the light-dependent reactions of photosynthesis?
a. energy from ATP
b. energy from NADPH
c. energy from the splitting of water
d. energy from electron transfer chains
e. energy from the flow of hydrogen ions
ANSWER: e
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Gamma irradiation has been used to sterilize certain types of foods. There are, however, certain limitations on its effectiveness. One of these is that it will only work on
A. foods that are not in metal cans. B. moist foods. C. dry foods. D. It is effective with all foods.
Asexually produced fungal spores are ______, whereas fungal cells produced sexually, by the fusion of two mating strains, are _______
a. haploid; dikaryons b. haploid; diploid c. diploid; dikaryons d. diploid; haploid e. dikaryons; diploid
Endorphins are
a. neuromodulators. b. stimulators of brain and nervous activity. c. inhibitors of pain perception. d. neuromodulators and stimulators of brain and nervous activity. e. neuromodulators and inhibitors of pain perception.
What might result from the overwatering of houseplants and garden plants?
A) an increase in chlorophyll within the leaves B) decreased rates of transpiration C) dormancy due to loss of leaves D) the formation of hydroids