Multiple ChoiceThe trp operon consists of ________ genes that encode tryptophan biosynthesis enzymes.10112Has a video solution.
Multiple ChoiceIf the trp regulatory gene mutates so that the repressor protein can no longer bind to tryptophan what will be the result?7723Has a video solution.
Multiple ChoiceBased on the information you know about the trp operon, is the creation of tryptophan expensive to the cell?6472Has a video solution.
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? 272
Textbook QuestionIf 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.962Has a video solution.
