Enzyme Reactions

Question 1

What does the rate of catalysed reaction depend on

Answer 1

1 temperature
2 PH
3 concentration of enzyme
4 concentration of substrate

Question 2

What are optimum conditions

Answer 2

Conditions in which the enzyme works best

Question 3

What does it mean to denature

Answer 3

To destroy characteristic properties (ie shape)

Question 4

What happens to enzymes at a higher temperature

Answer 4

To a point the enzyme and substrate molecules move faster and collide more often to a point the higher the temperature the higher the rate of reaction

Question 5

If the temperature is too high what happens to the enzymes

Answer 5

The amino acid chains in the protein unravel and denature the active site therefore the enzyme can no longer bind to the substrate so reaction rate decreases this is irreversible

Question 6

A fact about ph affecting enzymes

Answer 6

Every enzyme has a different optimum ph

Question 7

How can the change in ph affect the reaction of an enzyme

Answer 7

The amino acids react which makes the enzyme unfold and denatures the active site

Question 8

Why does each enzyme have a different optimum ph

Answer 8

To suit their different conditions ie pepsin is in the stomach where it’s high in acidity so the optimum ph is 3

Question 9

How does the concentration of the substrate and enzyme affect the enzyme (2ways)

Answer 9

Both higher rate of concentration the higher rate of reaction
They’re also limited by each other when all of them are bonded if there’s one left over there’s nothing left to bind to do the molecules will not increase