Lac Operon Video Lessons

Video Thumbnail

Concept

Problem: What is the role of glucose in catabolite repression?  a) It increases the levels of cAMP in the cell, stimulating transcription from the lac operon.b) It decreases the levels of cAMP in the cell, repressing transcription from the lac operon.c) It represses transcription from the lac operon, causing a decrease in cAMP levels in the cell. 

FREE Expert Solution

lac operon: synthesizes proteins for the metabolism of lactose (lac genes)

• when lactose and glucose are present, lac genes are not expressed

• when only lactose is present, lac genes are expressed


View Complete Written Solution
Problem Details

What is the role of glucose in catabolite repression?  

a) It increases the levels of cAMP in the cell, stimulating transcription from the lac operon.

b) It decreases the levels of cAMP in the cell, repressing transcription from the lac operon.

c) It represses transcription from the lac operon, causing a decrease in cAMP levels in the cell. 

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lac Operon concept. You can view video lessons to learn Lac Operon. Or if you need more Lac Operon practice, you can also practice Lac Operon practice problems.