Which Statement About the Transcription Attenuation Mechanism Is TRUE

question 56

Multiple Choice

Which statement about the transcription attenuation mechanism is TRUE?

• A) In some operons (e.g., the his operon), attenuation may be the only regulatory mechanism.
• B) Sequences of the trp operon leader RNA resemble an operator.
• C) The leader peptide acts by a mechanism that is similar to that of a repressor protein.
• D) The leader peptide gene of the trp operon includes no Trp codons.
• E) The leader peptide is an enzyme that catalyzes transcription attenuation.

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