Unit 3: Cellular Energetics

Question 1

What is an enzyme?

Answer 1

Catalyst that speeds up the rate of reaction by lowering activation energy

Question 2

Active site

Answer 2

area where substrate with specific shape will bind to being chemical reaction

Question 3

substrate

Answer 3

what binds to active site to begin a chemical reaction

Question 4

Induced fit theory

Answer 4

1. Substrate must interact with active site
2. Active site must change shape to fit the substrate

Question 5

What pH does a high H+ concentration represent?

Answer 5

acidic 1-6

Question 6

What pH does a high OH- concentration represent?

Answer 6

base 8-14

Question 7

What does denaturing do to an enzyme?

Answer 7

Enzyme will begin to unfold changing the active site. The substrate and enzyme will no longer be able to interact decreasing the rate of reaction

Question 8

Competitive inhibition

Answer 8

inhibitor competes with substrate for the active site

Question 9

Non-competitive inhibition

Answer 9

inhibitor binds to allosteric site change the shape of the active site and the substrate cannot bind

Question 10

activators

Answer 10

increase the rate of reaction by increasing the change that the substrate and active site will bind

Question 11

metabolism

Answer 11

breaks down macromolecules

Question 12

catabolic pathway

Answer 12

breaking down molecules

Question 13

anabolic pathway

Answer 13

building molecules