Chapt. 2.5

Question 1

Substrate

Answer 1

A specific reactant that an enzyme acts on

Question 2

Enzyme

Answer 2

Catalyst for chemical reaction in living things

Question 3

Activation energy is the energy required to

Answer 3

Start a chemic reaction

Question 4

What can reduce the amount of energy needed for a chemical reaction to take place?

Answer 4

Catalyst

Question 5

What happens to the spread of a chemical reaction when a catalyst is present?

Answer 5

It speeds up

Question 6

Where do enzymes act as catalysts?

Answer 6

In living things

Question 7

What physical factors affect the action of enzymes?

Answer 7

Temp and pH

Question 8

How do enzymes affect the speed of chemical reactions in the body?

Answer 8

It speeds it up

Question 9

How does a substrate affect an enzyme?

Answer 9

Binds to enzymes

Question 10

A catalyst can (increase/decrease) the amount of energy needed to start a chemical reaction.

Answer 10

Decrease

Question 11

Substrates are (catalyst/enzymes) as keys are to locks.

Answer 11

Enzymes

Question 12

(Enzymes/Substrates) are catalyst for chemical reactions in living things.

Answer 12

Enzymes

Question 13

Catalyst

Answer 13

A substance that reduces the amount of energy needed to start a reaction