MDCAT Biology MCQ #426

For every three molecules of CO2 entering the Calvin cycle, what is the net output of Glyceraldehyde-3-phosphate (G3P)?

MDCAT Biology MCQ #426

  1. Question 1

    Q1. For every three molecules of CO2 entering the Calvin cycle, what is the net output of Glyceraldehyde-3-phosphate (G3P)?

    • A) 3 G3P
    • B) 1 G3P
    • C) 5 G3P
    • D) 6 G3P

    Answer: 1 G3P

    Explanation: Only 1 out of 6 G3P molecules leaves the cycle. 3 G3P is tempting because 3 CO2 enter, but regeneration requires 5.