4.1 Enzyme Action

Question 1

How do enzymes increase the rate if reaction?

Answer 1

By lowering the activation energy if the reactionary catalyse

Question 2

What is the active site?

Answer 2

The area of an enzyme with a shape complementary to a specific substrate, allowing the enzyme to bind a substrate with specificity

Question 3

What does “enzymes are specific to substrates they bind to” mean?

Answer 3

It means that only one type of substrate fits into the active site of the enzyme

Question 4

What is an enzyme-substrate complex?

Answer 4

A complex formed when a substrate is bound to the active site

Question 5

What is the lock and key explanation?

Answer 5

The idea that enzymes and substrates bind with specificity and the reaction takes place (in the same way that a key is specific to a lock)

Question 6

What is the induced-fit hypothesis?

Answer 6

A modified lock and key explanation for enzyme action

The active site of the enzyme is modified in shape by binding to the substrate