B1.2.4 Enzyme reactions Flashcards Preview

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Flashcards in B1.2.4 Enzyme reactions Deck (12):
1

What factors effect the rate of an enzyme-catalysed reaction?

Temprature
pH
Concentration of enzymes and substrate

2

State the correct term for the conditions which an enzyme work best in

The optimum conditions

3

Generally, what happens to the rate of an reaction in a higher temperature?

The higher the temperature the faster the reaction

4

What happens to the rate of collisions between enzymes and substrate in a higher temprature

The rate of collisions increase

5

What happens to an enzyme if the temperature is too high?

The amino acid chains in the protein start to unravel, changing the shape of the active site

6

State the correct term that describes an enzyme which active site has been changes shape

Denatured

7

What happens to the rate of reaction when the temperature gets to high?

It decreases

8

Describe what happens when an enzyme denatures

The substrate can no longer bind to the enzyme and so the rate of reaction decreases

9

How does a change in pH effect an enzyme?

A change in pH effects the interactions between amino acids, this may make the enzyme unfold, changing the shape of the active site

10

Generally, what happens to the rate of an reaction in a higher substrate concentration?

It increases

11

Generally, what happens to the rate of an reaction in a higher enzyme concentration?

It increases

12

What will happen to the reaction if no new substrate molecules are added?

The reaction will stop