The prokaryote operon model explains gene regulation at the level of

a. replication.
b. transcription.
c. transcript processing.
d. transcript transport.
e. translation.


ANSWER: b

Biology & Microbiology

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Which of the following is not a termination codon?

A. UAG B. UGA C. UAA D. AUG

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Antigens that depend on the function of T-helper cells are called ________ antigens.

Fill in the blank(s) with the appropriate word(s).

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If you wanted to design a drug to stop the sense of smell, what kind of receptor would you target?

A. photoreceptor B. chemoreceptor C. proprioceptor D. electroreceptor E. thermoreceptor

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Herbivores represent ____

a. primary consumers b. secondary consumers c. tertiary consumers d. primary producers

e. secondary producers

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