Which of the Following Occurs When the Cellular Level of Tryptophan

question 16

Multiple Choice

Which of the following occurs when the cellular level of tryptophan decreases in E.coli?

• A)Tryptophan-bound Trp repressor associates with trp operator.
• B)Trp apo-repressor has lowered affinity for trp promoter,allowing RNA polymerase binding and transcription of the trp operon.
• C)Tryptophan binds trp inducer to promote positive control of trp promoter.
• D)Trp repressor has a greater affinity for trp operator.

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To actively endorse or encourage the popularity, sale, or acceptance of something.

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