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Flashcards in NBS Chemistry Biochemical Energetics Deck (31):
1

What must you have in order to run the krebs cycle?

Acetyl CoA

2

Which enzyme converts pyruvate to Acetyl CoA?
A. Succinyl CoA synthase
B. ATP synthase
C. Pyruvate Dehydrogenase
D. Pyruvate Synthase

C
Pyruvate Dehydrogenase

3

Pre-Krebs requires 5 coenzymes which are?
(These Five Coenzymes Love Nutrition)

Thiamine pyrophosphate (from thiamine B1)
FAD (from Riboflavin B2)
CoA (from pantothenic acid B5)
Lipoic acid
NAD (from Niacin B3)

4

The products of the pre-krebs cycle are acetyl CoA, NADH and:
A. H2O
B. H+
C. FAD
D. CO2

CO2

5

T/F: Tricarboxylic acid cycle and TCA cycle and Citric Acic Cycle are all AKA names for the Krebs cycle.

True

6

The Krebs cycle takes place where?
A. nucleus
B. inner fold of the inner mitochondrial membrane
C. mitochondria
D. cytoplasm

Mitochondria

7

T/F You can run the Krebs cycle during anaerobic exercise.

False

Krebs is strictly active during aerobic conditions

8

Succinate dehydrogenase requires _______.
A. NADPH
B. FADH
C. FAD
D. NAD

FAD

(succinyl CoA --> Furmarate)

9

What is succinate thiokinase function in the krebs cycle?
A. production of ATP
B. reduction of ATP
C. Formation of succinyl CoA

A

Production of ATP

10

How CO2s are produced durine ONE turn of the krebs cycle?
A. 3
B. 4
C. 1
D. 2

2 CO2

11

How NADHs are produced durine ONE turn of the krebs cycle?
A. 3
B. 4
C. 1
D. 2

3 NADH

12

How FADH2 are produced durine ONE turn of the krebs cycle?
A. 3
B. 4
C. 1
D. 2

1 FADH2

13

How GTP/ ATP are produced durine ONE turn of the krebs cycle?
A. 3
B. 4
C. 1
D. 2

1 GTP or ATP

14

If you had 4 turns of the krebs cycle, how many NADH would be produced?
A. 10
B. 3
C. 9
D. 12

12

3 per spin x 4 spins= 12

15

What is another name for the electron transport chain?
A. Cori cycle
B. Cytochrome series
C. Repiratory chain
D. B and C

B and C

16

The ETC cycle takes place where?
A. nucleus
B. inner fold of the inner mitochondrial membrane
C. mitochondria
D. cytoplasm

B
Inner fold of the inner mitochondrial membrane

17

What is the final electron acceptor for the cytochrome series?
A. Sodium
B. Oxygen
C. Nitrogen
D. Hydrogen

Oxygen

forming H2O WATER

18

Along with ATP synthase, what complex is associated with oxidative phosphorylation?
A. Complex 2
B. Complex 5
C. Complex 4
D. Complex 1

Complex 5 (V)

19

Which two ATP producing systems are considered "linked" or one mechanism?
A. Krebs and Glycolysis
B. ETC and Krebs
C. ETC and Oxidative phosporylation

ETC and Oxidative phosphorylation

20

Oxidation of NADH would yield have many ATP?
A. 1
B. 2
C. 3
D. 4

3

21

Oxidation of FADH2 would yield have many ATP?
A. 1
B. 2
C. 3
D. 4

2

22

The Krebs Cycle yields how many ATP?
A. 4
B. 20
C. 30
D. 2

30

23

The glycerol-3-phosphate shunt yields how many ATP?
A. 4
B. 20
C. 30
D. 2

4

24

Glycolysis yields how many ATP?
A. 4
B. 20
C. 30
D. 2

2

25

The total amount of ATP produced via the krebs cycle, Glycerol-3-phosphate shunt and glycolysis is:
A. 33
B. 32
C. 36
D. 34

36

could be 38 in some sources

26

What is the acronym for remembering the Krebs cycle?

Our Cousin Clyde Is Always Keeping Singapor Slings from Mallory

27

What follows Alpha ketogluterate in the krebs cycle?

Succinyl CoA

28

What starts the Krebs cycle?

Oxaloacetate

29

what must be done to pyruvate to turn it into acetyl CoA?

O.D.
Oxidative Decrboxylation

30

Which step in the krebs cycle involves FAD converting to FADH?
A. Malate
B. Succinate
C. Fumarate
D. A-ketogluterate

Fumarate

31

Which step in the krebs cycle does NOT involves NAD+ converting to NADH?
A. Malate
B. Isocitrate
C. A-Ketogluterate
D. Succinyl CoA

D
Succinyl CoA