Which of the following terms best characterizes catabolite repression associated with the lac operon in E.coli?
A) inducible system
B) repressible system
C) negative control
D) positive control
E) constitutive

Question

Quizplus · Accepted Answer

Catabolite repression associated with the lac operon in E. coli is an example of positive control because it involves the activation of the operon by a protein (the cAMP receptor protein, or CRP) when glucose levels are low, thereby facilitating the use of lactose.

Which of the Following Terms Best Characterizes Catabolite Repression Associated