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15. Central Dogma & Gene Regulation - Part 2 of 3

15. Central Dogma & Gene Regulation - Part 2 of 3

15. Central Dogma & Gene Regulation / The Lac Operon / Problem 12

In the lac operon of E. coli, what happens when lactose is present but glucose levels are low?

A

The lac repressor binds to the operator, preventing transcription.

B

cAMP levels decrease, leading to reduced binding of CAP-cAMP to the promoter.

C

cAMP levels increase, enhancing the binding of CAP-cAMP to the promoter and facilitating transcription.

D

The lac operon is permanently deactivated, and no transcription occurs.

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