1.4 Enzymes

Question 1

What are enzymes

Answer 1

They are biological catalysts
This means they speed up reactions in our cells whilst being unchanged by reactions and can be reused

Question 2

How many parts are required in enzyme reactions

Answer 2

Four

Question 3

What four different parts of enzyme reactions are required

Answer 3

Enzyme
Substrate
Active site
Product

Question 4

How many substrates fit into the active site of an enzyme

Answer 4

Only one substrate fits into the active site of an enzyme
Like a lock and key

Question 5

Stages of enzyme reactions

Answer 5

1) The enzyme is there
2) The substrate binds to the enzymes active site
3) Enzyme reactions occurs and products are formed. Products will leave the active site and the enzyme can be reused

Question 6

Two types of enzyme reaction

Answer 6

Degradation
Synthesis

Question 7

Degradation

Answer 7

Break down of larger molecules into smaller molecules

Question 8

Synthesis

Answer 8

Build up of larger molecules into smaller molecules

Question 9

Factors effecting rate of enzyme reaction

Answer 9

pH
Temperature

Question 10

What is optimum

Answer 10

Enzyme activity is best and most active when it’s at its optimum ph or temperature

Question 11

What is denatured

Answer 11

Enzymes become denatured at high temperatures
It means the shape of the enzyme changed and is no longer complimentary to its specific substrate. This slows down or completely stops the enzyme activity