- A) Citric acid cycle
- B) Oxidative phosphorylation
- C) Glycolysis
- D) Electron transport
Biochemistry MCQ
Total MCQ: 92
52 In glycolysis, ATP molecules are produced by
- A) Substrate-level phosphorylation
- B) Photosynthesis
- C) Cellular respiration
- D) Photophosphorylation
53 In muscle cells, fermentation produces _____
- A) CO₂, ethanol, NADH, ATP
- B) Pyruvate
- C) Lactate and NAD⁺
- D) CO₂, ethanol, and NAD⁺
54 Which of these is NOT a product of glycolysis?
- A) NADH
- B) FADH₂
- C) Pyruvate
- D) ATP
55 In fermentation _____ is reduced and _____ is oxidized.
- A) Pyruvate ... NADH
- B) Lactate ... NADH
- C) NADH ... Lactate
- D) NAD⁺ ... Pyruvate
56 In glycolysis, what starts the process of glucose oxidation?
- A) ADP
- B) FADH₂
- C) Hexokinase
- D) NADPH
57 In glycolysis, there is a net gain of _____ ATP.
- A) 3
- B) 2
- C) 5
- D) 4
58 Which statement about the citric acid cycle is correct?
- A) Depends on NAD+, a product of glycolysis
- B) Requires molecular oxygen
- C) Produces most ATP
- D) Final product is substrate for first reaction
59 Which molecule is metabolized in a cell to produce energy for performing work?
- A) ADP
- B) Phosphate
- C) ATP
- D) Glucose
60 True or false? The potential energy in an ATP molecule is derived mainly from its three phosphate groups.
- A) TRUE
- B) FALSE
- C)
- D)