In transcription,
a. several RNA molecules are made from the same DNA molecule.
b. promoters are needed so that RNA polymerase can bind to DNA.
c. DNA passes its information to messenger RNA.
d. a specific enzyme called RNA polymerase is required.
e. all of these
E
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Two kinds of organisms living together in ways beneficial to both is called:
A. mutualism B. bonding C. parasitism D. sociality E. none of the other choices provided
Natural passive acquired immunity would result from:
A) having the measles. B) ingesting colostrum. C) receiving a gamma globulin injection. D) receiving a vaccine.
Which of the following may be used by prokaryotes, under anaerobic conditions, as terminal electron acceptors?
A. nitrate B. nitrite C. sulfate D. carbon dioxide E. All of the choices are correct.
Irreversible enzyme inhibitors
A) bind to the active site of an enzyme through noncovalent bonds. B) have only a temporary effect on enzyme activity. C) are often toxic to cells. D) are not active against ribozymes. E) are uncommon in nature.