During electron transport, protons are pumped out of the mitochondrion at each o

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Home ‣ Biochemistry ‣ Oxidative Phosphorylation Comments

Question
During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for
Options
A. complex I
B. complex II
C. complex III
D. complex IV

Correct Answer

complex II

Oxidative Phosphorylation problems

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1. In electron transport, electrons ultimately pass to
Options
A. ADP
B. cytochrome b
C. oxygen
D. none of these

Discuss

Correct Answer: oxygen

2. Which of the following is correct sequence of processes in the oxidation of glucose?
Options
A. Krebs cycle - glycolysis - electron transport
B. Glycolysis - Krebs cycle - eletron transport
C. Electron transport - Krebs cycle - glycolysis
D. Krebs cycle - electron transport - glycolysis

Discuss

Correct Answer: Glycolysis - Krebs cycle - eletron transport

3. FAD is reduced to FADH₂ during
Options
A. electron transport phosphorylation
B. lactate fermentation
C. Krebs cycle
D. glycolysis

Discuss

Correct Answer: Krebs cycle

4. The complete oxidation of glucose yields usable energy in the form of
Options
A. FADH₂
B. coenzyme A
C. ATP
D. pyruvic acid

Discuss

Correct Answer: ATP

5. The carbon dioxide is primary a product of
Options
A. Krebs cycle
B. glycolysis
C. electron transport phosphorylation.
D. lactate fermentation.

Discuss

Correct Answer: Krebs cycle

6. What happens after glycolysis when oxygen is available as an electron acceptor?
Options
A. Pyruvate is formed
B. NADH is produced
C. Fermentation
D. Oxidative phosphorylation

Discuss

Correct Answer: NADH is produced

7. Which of the following is not a significant biological oxidizing agent?
Options
A. FAD
B. Fe³⁺
C. O₂
D. NAD⁺

Discuss

Correct Answer: Fe³⁺

8. Which of the following amino acid do not fall under the category of essential amino acid?
Options
A. Histidine
B. Leucine
C. Glycine
D. Methionine

Discuss

Correct Answer: Glycine

9. The nitrogen atoms of urea produced in the urea cycle are derived from
Options
A. nitrate
B. ammonia and aspartic acid
C. nitrite
D. ammonia

Discuss

Correct Answer: ammonia and aspartic acid

10. Urea cycle converts
Options
A. ammonia into a less toxic form
B. ketoacids into amino acids
C. amino acids into ketoacids
D. none of these

Discuss

Correct Answer: ammonia into a less toxic form

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During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for

Oxidative Phosphorylation problems

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