The most abundant protein in the world is the enzyme that initiates the fixation of carbon in the Calvin cycle. This enzyme is called:
a) ADP-synthase.
b) crassulacean acid.
c) rubisco.
d) ribulose biphosphate.
e) glyceraldehyde 3-phosphate.
Ans: c) rubisco.
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The equation AB + H2O ? A + B would be catalyzed by which of the following classes of enzymes?
A) oxidoreductases B) transferases C) hydrolases D) ligases E) isomerases
A coral reef is a complex _____ of calcium carbonate shells that are home to microbes, algae, invertebrates, and fishes.
A. ecosystem B. community C. biome D. population E. niche
You are out working in your garden, and you notice that one of your favorite flowering plants has black, dead spots on the leaves. You immediately suspect that the plant has been invaded by a pathogen and has initiated a(n) _____
A) avirulence response B) hypersensitive response C) resistance response D) virulence response
All of the following are found in some or all protozoa except
A. cell wall. B. ectoplasm and endoplasm. C. heterotrophic nutrition. D. formation of a cyst stage. E. motility.