The genes trpa - trpe code for proteins which ...

Posted By Admin @ September 03, 2022

Question:

The trp operon contains five genes: trpE, trpD, trpC, trpB, and trpA. These five genes code for components that produce three enzymes that catalyze the biosynthesis of tryptophan. The trpL region is the leader region, which helps regulate transcription once RNA polymerase has initiated transcription.The trp operon also undergoes negative regulation by a repressor. Tryptophan is the signal molecule (effector molecule) that binds to the repressor. Determine which events lead to an increase in transcription. The trp operon is transcribed when a. the trp repressor dissociates from DNA. b. the trp repressor is inactive. c. Trp is present at high concentrations inside the cell. d. the trp repressor is bound to the operator. e. trp binds to the repressor.

Answer:

Answer:

a. the trp repressor dissociates from DNA.

Explanation:

trp operon is transcribed when:

Bonus: trip is present in low concentrations (not high concentration as option c suggest) inside the cell

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