Regulation Of Gene Expression

Question 1

What is the primary site of regulation of gene expression in both prokaryotes and eukaryotes

Answer 1

Transcription

Question 2

List the three genes that lac operon contains

Answer 2

Lac Z
Lac Y
Lac A

Question 3

When glucose is available, is lac operon repressed or expressed?

Answer 3

It is repressed

Question 4

Which regulatory gene codes for repressor protein that binds to the O site of the operon

Answer 4

Lac I

Question 5

When lactose is available, there is repression of lac operon. True/False

Answer 5

False
Lac operon is maximally expressed

Question 6

In the presence of lactose, what binds to the repressor protein, causing conformational change that prevents the repressor from binding to the operator(O site)

Answer 6

Allolactose