5. Enzymes

Question 1

5 Rules of Enzymes

Answer 1

• They are always made of protein
• They can be used again
• They speed up the rate of reaction
• Each enzyme catalysts one reaction [??]
• They are specific

Question 2

Enzyme

Answer 2

Biological catalyst that controls the speed of reactions.

An enzyme is a protein that functions as a biological catalyst.

Question 3

Biological Enzyme

Answer 3

Biological catalysts that react with food to aid digestion.

Question 4

Substrate

Answer 4

The substance on which an enzyme acts.

Question 5

Enzyme–substrate complex

Answer 5

The structure formed when a substrate attaches to the active site of an enzyme.

Question 6

Effective collision

Answer 6

A collision between reactant particles, with the activation energy or more, that results in a chemical reaction.

Enzymes need the correct temperature for an effective collision to occur.

The higher the temperature the higher the energy of the enzyme. Thus the higher the frequency of effective collisions. However if the temperatue becomes to high it will deform the enzyme, making it Denatured.

The point at which enzyme activity is the highest is called the optimum temperature. In humans that temperature is a 37C.

Question 7

Denaturation

Answer 7

The process in which the shape of an enzyme and its active site is changed, usually permanently.