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12 April, 16:52

Under ideal conditions each NADH molecule will result in three ATP molecules, and each FADH2 molecule will result in two ATP molecules during oxidative phosphorylation. Calculate the total number of ATP molecules that might be produced in this phase of cellular respiration from one glucose molecule.

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  1. 12 April, 17:00
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    Answer: 38ATP

    Explanation:

    In the glycolytic pathway, metabolism of one molecule of glucose will produce

    Step 1. 1 ATP loss = - 1ATP

    Step 2. 1 ATP loss = - 1ATP

    Step 5. 2 NADH gain = 3*2=6ATP

    Step 6. 2 ATP gain = 1*2=2ATP

    Step 9. 2 ATP gain = 1*2=2ATP

    Pyruvate to acetyl CoA. 2 NADH gain = 3*2=6ATP

    TCA Cylce

    Step 3. 2 NADH gain=3*2=6ATP

    Step 4. 2 NADH gain=3*2=6ATP

    Step 5. 2 GTP gain=1*2=2ATP

    Step 6. 2 FADH2 gain=2*2=4ATP

    Step 8. 2 NADH gain=3*2=6ATP

    Net ATP gain in glycolysis 10-2=8ATP

    Pyruvate DH reaction = 6 ATP

    TCA = 24

    Net ATP generated from one molecule of glucose = 38 ATP
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