MDCAT Biology MCQ #533

In the Calvin cycle, if three molecules of CO2 are fixed, how many net molecules of Glyceraldehyde-3-phosphate (G3P) leave the cycle?

MDCAT Biology MCQ #533

  1. Question 1

    Q1. In the Calvin cycle, if three molecules of CO2 are fixed, how many net molecules of Glyceraldehyde-3-phosphate (G3P) leave the cycle?

    • A) 1 G3P
    • B) 3 G3P
    • C) 6 G3P
    • D) 2 G3P

    Answer: 1 G3P

    Explanation: For every 3 CO2 fixed, 6 G3P are made, but only 1 is a net gain for the plant. 5 are recycled.