MCQ practice · SSC Biology Board questions · Chapter 4: Bioenergetics
How many molecules of pyruvic acid are formed from two molecules of glucose in glycolysis?
Think it through first, then pick an option.
- a 1
- b 2
- c 3
- d 4
Answer and explanation
Correct answer: d 4
Each glucose gives 2 pyruvic acid, so two glucose give 4.
Why the other options are wrong
- a 1: One glucose already gives 2 pyruvic acid, so 1 is not possible.
- b 2: 2 pyruvic acid come from one glucose; the question has two glucose molecules.
- c 3: 3 is not a multiple; at 2 per glucose the number must be even.
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