CB1g Enzyme Activity

Question 1

What happens to an enzyme when the temperature increases?

Answer 1

Molecules move faster. High speeds increase the chance on substrate molecules bumping into enzyme molecules and slotting into the active site.

Question 2

What happens to an enzyme gets too high?

Answer 2

The shape of the enzyme molecule starts to change. The amount of change increases as the temperature increases, so it becomes more and more difficult for a substrate molecule to fit into the active site.

Question 3

At when temperature does the enzyme work fastest?

Answer 3

37°C

Question 4

What happens to enzyme molecules at low concentrations?

Answer 4

At low concentrations, may enzyme molecules have empty active sites so the rate of reaction is low?

Question 5

What happens to enzyme molecules at high concentrations?

Answer 5

At high concentrations, most active sites contain substrate molecules and the rate of reaction is as fast as it can be.

Question 6

What is the formula to calculate the rate of reaction?

Answer 6

1 divided by time taken

Question 7

What are the steps of synthesis reaction?

Answer 7

1. two or more substrate molecules join with the enzyme
2. enzyme helps bonds form in substrate molecules
3. product molecule is formed and released from enzyme

Question 8

What are the steps of breakdown reaction (digestion) ?

Answer 8

1. substrate molecule joins with the enzyme
2. enzyme helps bonds in substrate molecule to break
3. product molecules are formed and released from enzyme