biochem portage learning module 7 | Exams Nursing

The G value for a reaction is

+52kJ/mol. Is the reaction

spontaneous?

True

False

A biochemical metabolic pathway

is a series of enzyme-catalyzed

reactions that convert starting

material into products.

True

False

Question 3

Are 2 ATP molecules used in the

energy-investing stage of

glycolysis?

True

False

Question 4

Does the citric acid cycle occur in

the presence of oxygen?

True

False

Question 5

Does the β-oxidation pathway

degrade both even-numbered and

odd-numbered fatty acids?

True

False

Question 6

Net ATP and NADH produced (or

required) in glucose to pyruvate

steps in glycolysis:

1 NADH required

1 ATP, 2 NADH

required

2 ATP and 2 NADH

produced

2 ATP produced

None of the above

Question 7

ATP/NADH produced (or required)

in fructose-6-phosphate to fructose-

1,6-bisphosphate step in glycolysis:

1 ATP required

1 ATP produced

2 ATP produced

2 ATP required

None of the above

Question 8

What is the primary product of

glycolysis?

Glucose

Glucose-6-phosphate

Phosphoenolpyruvate

GAP and DHAP

Pyruvate

Question 9

Enzyme converting glucose to

glucose-6-phosphate:

Glucose

Glucase

Hexokinase

Aldolase

None of the above

Question 10

ATP formation by direct phosphate

transfer in glycolysis is called:

Lipid phosphorylation

Isomerization

Protein phosphorylation

Substrate-level

phosphorylation

Photo-protein

dephosphorylation

Question 11

Under anaerobic conditions,

pyruvate is converted to:

NADH

Lactate

Hexokinase

GAP

None of the above

Question 12

How many steps are in glycolysis?

6

8

9

10

12

Question 13

Where do glycolysis reactions

occur?

Mitochondria

Cytosol

Lysozyme

Ribosome

Nucleus

Question 14

How is ATP used in the initial

steps of glycolysis?

Lipid phosphorylation

reagent

Isomerization reaction

Source for

phosphorylation

Protein production

None of the above

Question 15

Which pathway is cyclic?

A. CAC (Citric Acid

Cycle)

B. PDH

C. Glycolysis

D. Oxidative

phosphorylation

E. β-oxidation

Question 16

How many ATP does NADH yield

after oxidative phosphorylation?

1.5

2

2.5

3

3.5

Question 17

Besides NADH and FADH₂, what

energy molecule is produced in the

citric acid cycle?

CO₂

GTP

CTP

UTP

None of the above

Question 18

What molecule is missing in the

reaction (Succinate, etc.)?

A. Fumarate

B. Malate

C. Succinate

D. CO₂

E. Succinyl-CoA

Question 19

Where are enzymes and coenzymes

of the citric acid cycle found?

Mitochondria

Vacuoles

Nucleus

Lysosomes

None of the above

Question 20

Cellular respiration takes in ____

and produces ____:

A. Glucose; NADH

B. O₂; CO₂

C. CO₂; ATP

D. NAD+; NADH

E. FAD; FADH₂

Question 21

How many phases are in glucose

degradation via cellular respiratio

1

2

3

Alternate

Reversible

Question 22

The PDH complex enzymes are:

P, D, H

E1, E2, and E3

Enzyme A, B, C

Enzyme a, b, c

None of the above

Question 23

What coenzymes are needed for β-

oxidation?

a. NAD+

b. FAD

c. GTP

d. Both A and B

e. None of the above

Question 24

Which letter corresponds to the β-

carbon of a fatty acid?

A

B

C

D

E

Question 25

What is the process for degrading

fatty acids called?

A. α-degradation

B. γ-degradation

C. β-oxidation

D. ω-spiral

E. δ-spiral

Question 26

What happens to DHAP in

glycolysis?

DHAP is converted to GAP by

triose phosphate isomerase,

allowing it to continue through

glycolysis.

Question 27

Fill in the blanks for glycolysis

details:

Glucose contains: six

carbons.

Oxidation uses: two

ATP.

Two three-carbon

products produce: four

ATP.

Glycolysis net yield:

two ATP, two NADH.

Question 28

How many β-oxidation cycles for a

10-carbon fatty acid?

A. 4 cycles are required for oleic

acid. Each cycle removes

two carbon units. ON the final

cycle, two acetyl groups are

produced.

B. There are 5 acetyl-CoA groups

produced. Two acetyl-CoA

groups on the last cycle.

C. There are 4 NADH and 4 FADH

molecules produced. One

per cycle.

20 carbon

A. 9 cycles are required for oleic

acid. Each cycle removes two

carbon units. ON the final cycle,

two acetyl groups are produced.

B. There are 10 acetyl-CoA groups

produced. Two acetyl-CoA groups

on the last cycle

C.There are 9 NADH and 9

FADH2 molecules produced. One

per cycle.

26. In one step of the glycolysis

pathway, a six-carbon

compound is broken into two

three-carbon fragments, only one

of which

can be further degraded in the

glycolysis pathway. What

happens to the

other three-carbon fragment?

=When glucose is converted to

DHAP and GAP, GAP continues in

the

Glycolyc pathway to be further

degraded. The other compound,

DHAP

then gets converted to GAP by an

isomerase before going through

glycolysis

Question 26:(Short answer) At the

end of the Preparatory Phase of

glycolysis, there are two products.

A) What are the two products? B)

What happens to each product?

In step 5 of glycolysis, glucose

(six-carbon) is converted to GAP

and DHAP (both 3-carbons). GAP

goes on in the glycolysis pathway.

The other, DHAP, cannot go on

through glycolysis directly; it is

converted to GAP by triose

phosphate isomerase.

Question 29

Describe the 3 phases of oxidative

cat

Fatty acid metabolism involves

three phases: β-oxidation, the

citric acid cycle, and oxidative

phosphorylation. In β-oxidation,

fatty acids are broken down into

acetyl-CoA, NADH, and FADH₂

in the mitochondria. The citric acid

cycle then uses acetyl-CoA to

produce GTP (ATP equivalent),

NADH, FADH₂, and releases CO₂.

Finally, NADH and FADH₂ are

oxidized in the electron transport

chain during oxidative

phosphorylation, generating large

amounts of ATP.

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The G value for a reaction is +52kJ/mol. Is the reaction spontaneous?

 True

 False

A biochemical metabolic pathway is a series of enzyme-catalyzed reactions that convert starting material into products.

 True

 False

Question 3 Are 2 ATP molecules used in the energy-investing stage of glycolysis?

 True

 False

Question 4 Does the citric acid cycle occur in the presence of oxygen?

 True

 False

Question 5 Does the β-oxidation pathway degrade both even-numbered and odd-numbered fatty acids?

 True

 False

Question 6 Net ATP and NADH produced (or required) in glucose to pyruvate steps in glycolysis:

 1 NADH required

 1 ATP, 2 NADH

required

 2 ATP and 2 NADH

produced

 2 ATP produced

 None of the above

Question 7 ATP/NADH produced (or required) in fructose-6-phosphate to fructose- 1,6-bisphosphate step in glycolysis:

 1 ATP required

 1 ATP produced

 2 ATP produced

 2 ATP required

 None of the above

Question 8 What is the primary product of glycolysis?

 Glucose

 Glucose-6-phosphate

 Phosphoenolpyruvate

 GAP and DHAP

 Pyruvate

Question 9 Enzyme converting glucose to glucose-6-phosphate:

 Glucose

 Glucase

 Hexokinase

 Aldolase

 None of the above

Question 10 ATP formation by direct phosphate transfer in glycolysis is called:

 Lipid phosphorylation

 Isomerization

 Protein phosphorylation

 Substrate-level

phosphorylation

 Photo-protein

dephosphorylation Question 11 Under anaerobic conditions, pyruvate is converted to:

 NADH

 Lactate

 Hexokinase

 GAP

 None of the above

Question 12 How many steps are in glycolysis?

Question 13 Where do glycolysis reactions occur?

 Mitochondria

 Cytosol

 Lysozyme

 Ribosome

 Nucleus

Question 14 How is ATP used in the initial steps of glycolysis?

 Lipid phosphorylation

reagent

 Isomerization reaction

 Source for

phosphorylation

 Protein production

 None of the above

Question 15 Which pathway is cyclic?

 A. CAC (Citric Acid

Cycle)

 B. PDH

 C. Glycolysis

 D. Oxidative

phosphorylation

 E. β-oxidation

Question 16 How many ATP does NADH yield after oxidative phosphorylation?

Question 17 Besides NADH and FADH₂, what energy molecule is produced in the citric acid cycle?

 CO₂

 GTP

 CTP

 UTP

 None of the above

Question 18 What molecule is missing in the reaction (Succinate, etc.)?

 A. Fumarate

 B. Malate

 C. Succinate

 D. CO₂

 E. Succinyl-CoA

Question 19 Where are enzymes and coenzymes of the citric acid cycle found?

 Mitochondria

 Vacuoles

 Nucleus

 Lysosomes

 None of the above

Question 20 Cellular respiration takes in ____ and produces ____:

 A. Glucose; NADH

 B. O₂; CO₂

 C. CO₂; ATP

 D. NAD+; NADH

 E. FAD; FADH₂

Question 21 How many phases are in glucose degradation via cellular respiratio

 Alternate

 Reversible

Question 22 The PDH complex enzymes are:

 P, D, H

 E1, E2, and E

 Enzyme A, B, C

 Enzyme a, b, c

 None of the above

Question 23 What coenzymes are needed for β- oxidation?

 a. NAD+

 b. FAD

 c. GTP

 d. Both A and B

 e. None of the above

Question 24 Which letter corresponds to the β- carbon of a fatty acid?

 A

 B

 C

 D

 E

Question 25 What is the process for degrading fatty acids called?

 A. α-degradation

 B. γ-degradation

 C. β-oxidation

 D. ω-spiral

 E. δ-spiral

Question 26 What happens to DHAP in glycolysis? DHAP is converted to GAP by triose phosphate isomerase, allowing it to continue through glycolysis. Question 27 Fill in the blanks for glycolysis details:

 Glucose contains: six

carbons.

 Oxidation uses: two

ATP.

 Two three-carbon

products produce: four ATP.

 Glycolysis net yield:

two ATP, two NADH. Question 28 How many β-oxidation cycles for a 10-carbon fatty acid? A. 4 cycles are required for oleic acid. Each cycle removes two carbon units. ON the final cycle, two acetyl groups are produced. B. There are 5 acetyl-CoA groups produced. Two acetyl-CoA groups on the last cycle. C. There are 4 NADH and 4 FADH molecules produced. One per cycle. 20 carbon A. 9 cycles are required for oleic acid. Each cycle removes two carbon units. ON the final cycle, two acetyl groups are produced. B. There are 10 acetyl-CoA groups produced. Two acetyl-CoA groups on the last cycle C.There are 9 NADH and 9 FADH2 molecules produced. One per cycle.

In one step of the glycolysis pathway, a six-carbon compound is broken into two three-carbon fragments, only one of which can be further degraded in the glycolysis pathway. What happens to the other three-carbon fragment? =When glucose is converted to DHAP and GAP, GAP continues in the Glycolyc pathway to be further degraded. The other compound, DHAP then gets converted to GAP by an isomerase before going through glycolysis Question 26:(Short answer) At the end of the Preparatory Phase of glycolysis, there are two products. A) What are the two products? B) What happens to each product? In step 5 of glycolysis, glucose (six-carbon) is converted to GAP and DHAP (both 3-carbons). GAP goes on in the glycolysis pathway. The other, DHAP, cannot go on through glycolysis directly; it is converted to GAP by triose phosphate isomerase. Question 29 Describe the 3 phases of oxidative cat Fatty acid metabolism involves three phases: β-oxidation , the citric acid cycle , and oxidative phosphorylation. In β-oxidation, fatty acids are broken down into acetyl-CoA , NADH , and FADH₂ in the mitochondria. The citric acid cycle then uses acetyl-CoA to produce GTP (ATP equivalent) , NADH , FADH₂ , and releases CO₂. Finally, NADH and FADH₂ are oxidized in the electron transport chain during oxidative phosphorylation, generating large amounts of ATP.

biochem portage learning module 7, Exams of Nursing

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 True

 False

 True

 False

 True

 False

 True

 False

 True

 False

 1 NADH required

 1 ATP, 2 NADH

 2 ATP and 2 NADH

 2 ATP produced

 None of the above

 1 ATP required

 1 ATP produced

 2 ATP produced

 2 ATP required

 None of the above

 Glucose

 Glucose-6-phosphate

 Phosphoenolpyruvate

 GAP and DHAP

 Pyruvate

 Glucose

 Glucase

 Hexokinase

 Aldolase

 None of the above

 Lipid phosphorylation

 Isomerization

 Protein phosphorylation

 Substrate-level

 Photo-protein

 NADH

 Lactate

 Hexokinase

 GAP

 None of the above

 Mitochondria

 Cytosol

 Lysozyme

 Ribosome

 Nucleus

 Lipid phosphorylation

 Isomerization reaction

 Source for

 Protein production

 None of the above

 A. CAC (Citric Acid

 B. PDH

 C. Glycolysis

 D. Oxidative

 E. β-oxidation

 CO₂

 GTP

 CTP

 UTP

 None of the above

 A. Fumarate

 B. Malate

 C. Succinate

 D. CO₂

 E. Succinyl-CoA

 Mitochondria

 Vacuoles

 Nucleus

 Lysosomes

 None of the above

 A. Glucose; NADH

 B. O₂; CO₂

 C. CO₂; ATP

 D. NAD+; NADH

 E. FAD; FADH₂

 Alternate