MDCAT Biology MCQ #497

To produce one net molecule of glucose, the Calvin cycle must fix six molecules of CO2. What is the total energy requirement?

MDCAT Biology MCQ #497

  1. Question 1

    Q1. To produce one net molecule of glucose, the Calvin cycle must fix six molecules of CO2. What is the total energy requirement?

    • A) 9 ATP and 6 NADPH
    • B) 12 ATP and 12 NADPH
    • C) 18 ATP and 12 NADPH
    • D) 36 ATP and 24 NADPH

    Answer: 18 ATP and 12 NADPH

    Explanation: Fixing 6 CO2 requires 18 ATP and 12 NADPH; 9 ATP and 6 NADPH are needed for only half a glucose (3 CO2).