NBS Chemistry Biochemical Energetics

Question 1

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

Answer 1

Acetyl CoA

Question 2

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

Answer 2

C

Pyruvate Dehydrogenase

Question 3

Pre-Krebs requires 5 coenzymes which are?

These Five Coenzymes Love Nutrition

Answer 3

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

Question 4

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

Answer 4

CO2

Question 5

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

Answer 5

True

Question 6

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

Answer 6

Mitochondria

Question 7

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

Answer 7

False

Krebs is strictly active during aerobic conditions

Question 8

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

Answer 8

FAD

succinyl CoA –> Furmarate

Question 9

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

Answer 9

A

Production of ATP

Question 10

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

Answer 10

2 CO2

Question 11

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

Answer 11

3 NADH

Question 12

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

Answer 12

1 FADH2

Question 13

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

Answer 13

1 GTP or ATP

Question 14

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

Answer 14

12

3 per spin x 4 spins= 12

Question 15

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

Answer 15

B and C

Question 16

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

Answer 16

B

Inner fold of the inner mitochondrial membrane

Question 17

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

Answer 17

Oxygen

forming H2O WATER

Question 18

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

Answer 18

Complex 5 (V)

Question 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

Answer 19

ETC and Oxidative phosphorylation

Question 20

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

Answer 20

3

Question 21

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

Answer 21

2

Question 22

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

Answer 22

30

Question 23

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

Answer 23

4

Question 24

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

Answer 24

2

Question 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 ```

Answer 25

36 could be 38 in some sources

Question 26

What is the acronym for remembering the Krebs cycle?

Answer 26

Our Cousin Clyde Is Always Keeping Singapor Slings from Mallory

Question 27

What follows Alpha ketogluterate in the krebs cycle?

Answer 27

Succinyl CoA

Question 28

What starts the Krebs cycle?

Answer 28

Oxaloacetate

Question 29

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

Answer 29

O.D. | Oxidative Decrboxylation

Question 30

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

Answer 30

Fumarate

Question 31

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

Answer 31

D | Succinyl CoA