Lock and Key model

Question 1

What does the Lock and Key model suggest?

Answer 1

An enzyme will only work with it’s specific substrate or substance undergoing the reaction

Question 2

What will fit the active site of an enzyme?

Answer 2

Only the substance with the correct shape will fit into the active site

Question 3

Why does the active site need to change shape?

Answer 3

It is typically not the perfect shape, so the active site needs to change shape to fit tighter to the substrate

Question 4

What will happen to the rate of reaction if you increase the temperature?

Answer 4

The rate of reaction will increase

Question 5

What is denaturing?

Answer 5

This is when too high heat will break the bonds holding the enzyme in it’s shape, the active site will no longer correspond to the substrate. This can also happen if pH is too high or low

Question 6

What is the optimum pH for enzymes in the body?

Answer 6

7 (neutral)

Question 7

What is the optimum temperature for enzymes in the body?

Answer 7

37 degrees celcius

Question 8

If at the optimum pH, what will happen?

Answer 8

Increased enzyme activity

Question 9

If at optimum temperature, what will happen?

Answer 9

Increased enzyme activity