Chapter 2 - Biochemistry and Cellular Respiration

Question 1

name for an inactive enzyme

Answer 1

zymogen (ends with “-ogen”)

Question 2

reaction rate is dependent on 3 factors

Answer 2

pH, temperature, substrate concentration

Question 3

NADH: number of ATP equivalents

Answer 3

2.5 ATP

Question 4

FADH2: number of ATP equivalents

Answer 4

1.5 ATP

Question 5

NADH produced by 2 turns of Krebs Cycle

Answer 5

6 NADH

Question 6

FADH2 produced by 2 turns of Krebs Cycle

Answer 6

2 FADH2

Question 7

GTP/ATP produced by 2 turns of Krebs Cycle

Answer 7

2 GTP

Question 8

compartment of mitochondria has lower pH

Answer 8

intermembrane space

Question 9

Krebs Cycle: this binds OAA to for citrate

Answer 9

Acetyl CoA

Question 10

complex in mitochondria produces Acetyl CoA

Answer 10

Pyruvate Dehydrogenase Complex (PDC)

Question 11

inhibitors bind to noncovalent bonds at active site of enzyme

Answer 11

competitive inhibitors

Question 12

inhibitors bind noncovalently to enzyme at allosteric site and change its structure

Answer 12

noncompetitive inhibitors

Question 13

rate of a reaction can be increased back to original in presence of this inhibitor

Answer 13

competitive inhibitor

Question 14

inhibitor often resembles its substrate

Answer 14

competitive inhibitor

Question 15

inhibitor cannot be overcome by excess substrate

Answer 15

noncompetitive inhibitor

Question 16

inhibitor does not lower enzyme affinity for substrate

Answer 16

noncompetitive inhibitor