Multiple Choice
What is the function of the operator region of the trp operon?
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16. Regulation of Expression
The Trp Operon
Back16. Regulation of Expression
The Trp Operon
- Multiple ChoiceWhat is the determining factor for the transcription of structural genes in the trp operon?242views
- Multiple Choice
The trp operon consists of ________ genes that encode tryptophan biosynthesis enzymes.
2201views3rank - Multiple Choice
If the trp regulatory gene mutates so that the repressor protein can no longer bind to tryptophan what will be the result?
1880views8rank - Multiple Choice
In the absence of tryptophan, ______:
2580views7rank - Multiple Choice
Based on the information you know about the trp operon, is the creation of tryptophan expensive to the cell?
1839views8rank - Multiple ChoiceThis chapter contains a lengthy discussion of the trp operon involved in regulating the synthesis of tryptophan. In the case of E. coli, the bacterium may need to synthesize tryptophan, or its host, a human, may supply all the tryptophan it needs. Why do both bacteria and humans need tryptophan?1075views
- Multiple Choice
Under what conditions does the trp repressor block transcription of the trp operon?
623views1rank - Textbook Question
If a particular operon encodes enzymes for making an essential amino acid and is regulated like the trp operon, then
a. The amino acid inactivates the repressor.
b. The repressor is active in the absence of the amino acid.
c. The amino acid acts as a corepressor.
d. The amino acid turns on transcription of the operon.
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