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NEET-UG Biology

Glycolysis — practice questions

7 questions in the bank on this idea. Below are 7 of them, exactly as they appear in a test.

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  1. Question 1 · difficulty L1 · recall

    Where does glycolysis occur in a eukaryotic cell?

    • A. Cytoplasm
    • B. Mitochondrial matrix
    • C. Inner mitochondrial membrane
    • D. Chloroplast stroma

  2. Question 2 · difficulty L2 · understanding

    What is the net ATP gain from glycolysis for each molecule of glucose?

    • A. 4 ATP
    • B. 2 ATP
    • C. 6 ATP
    • D. 8 ATP

  3. Question 3 · difficulty L3 · understanding

    Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : ATP is used at two steps in glycolysis. Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1, 6-diphosphate. In the light of the above statements, choose the correct answer from the options given below :

    • A. Both A and R are true but R is NOT the correct explanation of A.
    • B. A is true but R is false.
    • C. A is false but R is true.
    • D. Both A and R are true and R is the correct explanation of A.

  4. Question 4 · difficulty L3 · understanding

    What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?

    • A. Four
    • B. Six
    • C. Two
    • D. Eight

  5. Question 5 · difficulty L3 · application

    A cell converts one glucose molecule to two pyruvate molecules but cannot reoxidise NADH after glycolysis. Which glycolytic requirement will eventually limit continued glucose breakdown?

    • A. Formation of acetyl-CoA
    • B. Supply of oxygen to hexokinase
    • C. Regeneration of NAD+
    • D. Operation of ATP synthase

  6. Question 6 · difficulty L4 · analysis

    During glycolysis, ATP is both consumed and produced. Why is the pathway still described as energy yielding overall?

    • A. The pathway produces only NADH, not ATP
    • B. No ATP is actually consumed
    • C. All ATP comes from oxidative phosphorylation
    • D. More ATP is produced in later steps than is invested initially

  7. Question 7 · difficulty L5 · analysis

    Two glucose molecules pass completely through glycolysis. Ignoring all later pathways, what combined net products are expected?

    • A. 4 pyruvate, 4 ATP and 4 NADH
    • B. 2 pyruvate, 4 ATP and 2 NADH
    • C. 4 pyruvate, 8 ATP and 2 NADH
    • D. 2 pyruvate, 2 ATP and 4 NADH

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