Enzymes

Question 1

Describe the induced fit model or enzyme action

Answer 1

-The active site of the enzyme is not completely complementary to the substrate
-when the substrate binds, the active site changes shape
-allowing an enzyme-substrate complex to form
-the bending of the bonds in the substrate causes the reaction to occur

Question 2

How is the lock and key model different from the induced fit model?

Answer 2

• active site does not change, is fixed
  -does not wrap around substrate
  -is complementary before binding

Question 3

What does extra cellular mean?

Answer 3

Outside of the cell

Question 4

What does intracellular mean?

Answer 4

Inside of the cell

Question 5

What is ment by metabolism?

Answer 5

The chemical reactions that take place inside living cells or organisms

Question 6

What’s the difference between a biological catalyst and a chemical catalyst?

Answer 6

A chemical catalyst needs very high temperatures, increases pressures and extremes of pH
Enzymes can speed up metabolic reactions at lower temperatures, neutral pH and at normal pressures.

Question 7

What is the lock and key model?

Answer 7

An analogy, used to describe the fact that only specific substrates fit to the active site
- because the active site is complementary to the shape of the substrate

Question 8

What’s anabolic?

Answer 8

When enzymes use energy to join smaller molecules to make larger ones?