- A) Glyceraldehyde-3-phosphate
- B) Fructose-1,6-bisphosphate
- C) Pyruvate
- D) Acetyl-CoA
Biochemistry MCQ
Total MCQ: 92
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12 What is the role of NAD+ in glycolysis?
- A) It acts as an electron donor.
- B) It gets reduced to NADH.
- C) It generates ATP directly.
- D) It phosphorylates glucose.
13 What is the primary function of glycolysis?
- A) To generate oxygen
- B) To produce ATP
- C) To synthesize proteins
- D) To break down fatty acids
14 What happens to glucose when it enters glycolysis?
- A) It remains unchanged.
- B) It gets phosphorylated.
- C) It gets oxidized directly.
- D) It forms fatty acids.
15 What type of reaction occurs during substrate-level phosphorylation in glycolysis?
- A) Oxidation-reduction reaction
- B) Hydrolysis reaction
- C) Phosphorylation reaction
- D) Condensation reaction
16 Where does glycolysis occur in the cell?
- A) Mitochondria
- B) Cytoplasm
- C) Nucleus
- D) Endoplasmic reticulum
17 Which metabolic pathway does pyruvate enter when oxygen is present?
- A) Glycolysis
- B) Fermentation
- C) TCA cycle
- D) Lipid synthesis
18 Which compound serves as an allosteric regulator derived from glycolytic intermediates?
- A) Lactate
- B) Acetyl-CoA
- C) 2,3-Bisphosphoglycerate
- D) Fructose-1,6-bisphosphate
19 What is the net gain of ATP molecules from one molecule of glucose during glycolysis?
- A) 1 ATP
- B) 2 ATP
- C) 4 ATP
- D) 6 ATP
20 Which enzyme regulates one of the key irreversible steps in glycolysis by converting fructose-6-phosphate into fructose-1,6-bisphosphate?
- A) Hexokinase
- B) Phosphofructokinase-1
- C) Pyruvate kinase
- D) Aldolase