Under High Tryptophan Conditions, Tryptophan Binds to and Activates the Repressor

question 71

Multiple Choice

Under high tryptophan conditions, tryptophan binds to and activates the repressor protein, thereby blocking transcription of the trp operon. This is an example of:

• A) protein degradation
• B) negative control of inducible genes
• C) negative control of repressible genes
• D) positive control of inducible genes
• E) positive control of repressible genes

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