Sample Questions — Glycolysis
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MCQ
Why does glycolysis occur in anaerobic organisms as the sole pathway?
✅ Correct Answer: A
Glycolysis functions in the absence of oxygen, unlike aerobic respiration.
MCQ
Why is the glycolytic pathway considered energy investing in its early steps?
✅ Correct Answer: D
Two ATP molecules are consumed before ATP generation begins.
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MCQ
Why is NAD⁺ essential for glycolysis to continue?
✅ Correct Answer: C
PGAL is oxidized by NAD⁺ to form NADH + H⁺, allowing energy yield.
MCQ
Why is fructose-1,6-bisphosphate a key regulatory point in glycolysis?
✅ Correct Answer: B
F1,6BP cleaves into DHAP and PGAL, the two parallel 3-carbon intermediates.
MCQ
Which of the following is the key deciding factor for the metabolic fate of pyruvate?
✅ Correct Answer: A
Presence or absence of oxygen determines if pyruvate undergoes fermentation or aerobic respiration.
Practice All 22 Questions from Glycolysis
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