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Net ATP yield per glucose from glycolysis alone is

A1 ATP
B2 ATP
C4 ATP
D36 ATP
Answer & Solution
Correct answer: B. 2 ATP
Invests 2 ATP, produces 4 → net 2. Plus 2 NADH (used later if O₂ is available). Full aerobic respiration extracts ~36-38 ATP.
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