The situation in which an active regulatory protein "turns on" gene expression is an example of which of the following?
A) negative control
B) constitutive gene elements
C) positive control
D) a mutation
E) feedback inhibition

Question

Quizplus · Accepted Answer

Positive control refers to the activation of gene expression by an active regulatory protein. This is in contrast to negative control, where gene expression is inhibited by a regulatory protein. Constitutive gene elements refer to sequences that are always active, regardless of the presence of regulatory proteins. A mutation may affect gene expression, but it is not a mechanism for turning on gene expression. Feedback inhibition refers to a regulatory mechanism where the end product of a pathway inhibits an earlier step in the pathway.

The Situation in Which an Active Regulatory Protein "Turns On