If a particular operon encodes enzymes for making an essential amino acid and is regulated like the trp operon, then the
A) amino acid inactivates the repressor.
B) enzymes produced are called inducible enzymes.
C) repressor is active in the absence of the amino acid.
D) amino acid acts as a corepressor.
E) amino acid turns on transcription of the operon.
Correct Answer:
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