Which of the following is FALSE regarding regulation of gene expression in bacteria?
A) Negative control of transcription involves the binding of a repressor protein to a regulatory DNA sequence, with the consequence of preventing transcription.
B) Repressor proteins commonly contain DNA- binding and allosteric domains.
C) There can be transcriptional regulation for the initiation and the amount of transcription, as well as post- transcriptional regulatory mechanisms.
D) Regulated transcription is necessary; constitutive transcription, continuously transcribing genes with no regulatory control, does not occur without mutation.
E) Positive control of transcription involves the binding of an activator protein to a regulatory DNA sequence, with the result of initiating transcription.

Question

Quizplus · Accepted Answer

Regulated transcription is indeed necessary for efficient cellular function, but the statement that constitutive transcription (continuous transcription of genes without regulatory control) does not occur without mutation is false. Constitutive transcription does occur in bacteria for genes that need to be constantly expressed, such as those involved in basic cellular functions and metabolism.

Which of the Following Is FALSE Regarding Regulation of Gene