Lac Operon

What is the main function of the Lac Operon?

What is the role of B-Galactosidase?

In the presence of Glucose, what happens to B-Galactosidase?

What happens to B-Galactosiade when Glucose levels are low?

What happens to B-Galactosidase when lactose levels are high?

Why is B-Galactosidase referred to as an inducible enzyme?

How is lactose converted into galactose and glucose?

Apart from B-Galactosidase, what other 2 enzymes are synthesized?

What is the role of galactosidase permease?

What is the role of thiogalactoside transacetylase?

What are the 3 structural genes involved in lactose metabolism?

What are the genetic elements of the lac operon?

What is the promoter site on the lac operon?

What is a repressor protein and what does it do?

In the presence of lactose, what happens to the repressor?

Where does the repressor bind when glucose is high?

Where does RNA polymerase bind to?

In the presence of glucose, what happens on the repressor?

Describe how cAMP is made?

What is adenylate cyclase?

When the level of glucose drops, the level of cAMP rises through the action of what enzyme?

What is the role of CAP?

How does CAP bind to the promoter region?

Summarise what happens to the levels of everything involved in the lac operon if lactose is high?

Summarise what happens to the levels of everything involved in the lac operon if glucose is high?