Enzymes and Digestion

Question 1

The model of an enzyme action is called

Answer 1

Lock and Key

Question 2

Example of a Catabolic reaction

Answer 2

Starch ——Amylase—-> Glucose + Glucose

Question 3

Example of a Anabolic reaction

Answer 3

Glucose + Glucose ——–> Starch

Question 4

Enzyme temp 0-40

Answer 4

Increase in rate of enzyme activity because of rise in temperature.

Enzyme and substrate gain kinetic energy
Increase chance of collision between enzyme and substrate

Question 5

40C for Enzyme

Answer 5

Maximum rate of reaction - Optimum

Max number of enzyme and substrate collisions
Maximum substrate broken down to product

Question 6

Above 40C for Enzyme

Answer 6

Increase temp beyond optimum causes decrease in enzyme activity

Enzyme is said to be denatured
Active site changes shape (irreversible)

Question 7

Do all enzymes have optimum temps of 40

Answer 7

Not all enzymes have an optimum of 40C

Plant enzymes have an optimum around 25
Thermostable have an optimum much higher than 40C.