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Question
When the cellular level of tryptophan decreasesin E. coli:a. tryptophan-bound Trp repressor associates with trp operator.
b. Trp aporepressor 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.
e. none of the above.
Answer
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Related questions
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Q:
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Q:
Which of the following does not reqire GTP hydrolysis?
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Q:
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Q:
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Q:
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Q:
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Q:
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Q:
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Q:
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b. C.
c. U.
d. G.
e. either T or C