Biology (Day 14; Enzymes)

Question 1

Enzyme

Answer 1

A biological catalyst (usually a protein)

Question 2

Catalyst

Answer 2

A substance that speeds up a chemical reaction without being changed

Question 3

Substrate

Answer 3

The reactant molecule that an enzyme works on

Question 4

Active site

Answer 4

the part of the enzyme where the substrate binds

Question 5

How does temperature affect enzyme activity?

Answer 5

higher temperatures speed up a reaction, and lower temperatures slow down a reaction; however, extremely high temperatures can cause an enzyme to lose its shape and stop working

Question 6

How does pH affect enzyme activity?

Answer 6

each enzyme has its optimum pH range; changing the pH outside of this range will slow down enzyme activity

Question 7

How does enzyme concentration affect enzyme activity?

Answer 7

increasing the enzyme concentration will speed up the reaction, as long as there is available substrate to bind to

Question 8

How does substrate concentration affect enzyme activity?

Answer 8

increasing substrate concentration increases the rate of reaction until all of the enzymes have bound

Question 9

Are enzymes reusable?

Answer 9

yes