Gene Regulation

Question 1

(lac operon regulation)
The activator must bind to the promoter (to attract RNA polymerase). The activator for the lac operon is _______.

Answer 1

CRP

Question 2

(lac operon regulation)
The repressor must not be bound to the operator (which would block RNA polymerase). The repressor for the lac operon is _______.

Answer 2

LacI

Question 3

(lac operon regulation)
When is LacI not bound to the lacO operator? When lactose levels in the cell are:
Low/High

Answer 3

High

Question 4

(lac operon regulation)
When is cAMP present in the cell? When glucose levels are:
Low/High

Answer 4

Low

Question 5

(lac operon regulation)
When is CRP bound to the CBS? When cAMP levels are:
Low/High

Answer 5

High

Question 6

When is RNA pol bound to the lac promoter (Plac)? When CRP is:
Bound to the CBS/Not bound to the CBS

Answer 6

Bound to the CBS

Question 7

(Insulin expression and engineering)
In what cells of the human body is the insulin gene found?

Answer 7

All cells

Question 8

(Insulin expression and engineering)
In what cells of the human body is the insulin gene expressed?

Answer 8

Specific cells in the pancreas