The active site of an enzyme
a. binds the reactants of a chemical reaction.
b. does not change shape during the reaction.
c. is necessary for regulation of the enzyme activity.
d. can bind many different reactants.
e. only acts when it is unoccupied.
A
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Which of the following is not an enzymatic function of the editosome?
A. uridylyltransferase B. ligase C. deaminase D. exoribonuclease
What is the relationship between species richness and recovery from natural disturbances?
a. Communities with more diversity do not recover from natural disturbances. b. Communities with more diversity experience more natural disturbances. c. Communities with more diversity recover less rapidly from natural disturbances. d. Communities with more diversity recover more rapidly from natural disturbances. e. There is no correlation between community diversity and recovery from natural disturbances.
What is a bulb?
a. a short section of underground stem encased by overlapping layers of scales b. a short, thickened underground stem that contains nodes c. a flattened, photosynthetic stem specialized to store water d. a fleshy stem that typically grows under the soil and parallel to its surface e. a stems that branches from a plant’s main stem and grows horizontally on the ground
Four of the five substances listed below are related to the kidney in one way or another. Select the
exception. a. renin b. thyroid stimulating hormone c. ADH d. angiotensin I e. erythropoietin