When arabinose is present in the environment, the arabinose operon is transcribed. What is this an example of?
A) negative control
B) positive control
C) push forward control
D) reverse transcription
E) positive translation

Question

Quizplus · Accepted Answer

The fact that the presence of arabinose leads to transcription of the arabinose operon, indicates that there is a regulatory protein that binds to the DNA to activate transcription when the inducer (arabinose) is present. This is an example of positive control.

When Arabinose Is Present in the Environment, the Arabinose Operon