How is enzyme activity regulated by feedback inhibition?
a. The end product of the metabolic pathway inactivates the first enzyme in the pathway.
b. The end product of the metabolic pathway inactivates the last enzyme in the pathway.
c. The end product of the metabolic pathway induces the first enzyme in the pathway.
d. The end product of the metabolic pathway degrades the first enzyme in the pathway.
e. The end product of the metabolic pathway degrades the last enzyme in the pathway.
a
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Typically, female rotifers are larger than males, sometimes up to ten times larger. Thus,
females have a __________ surface-to-volume ratio.
a. larger b. smaller
Members of the ____ lineage,including octopuses, squids, and nautiluses, have a fused head-foot body with the "foot"
modified into a set of arms and tentacles.
a. Cephalopoda b. Polyplacophora c. Platyhelminthes d. Gastropoda e. Scaphopoda
How long would it take to transfer genes a and b to an F- cell?
a. 1 minute b. 7 minutes c. 90 minutes d. 4 minutes e. 6 minutes
The region of the mantle below the crust is called:
a. the asthenosphere. b. the mantle. c. the lithosphere. d. the outer core.