MDCAT Biology MCQ #291

During the Calvin cycle, the reduction of 3-phosphoglycerate produces a sugar that can be exported to the cytosol. What is this 3-carbon sugar?

MDCAT Biology MCQ #291

  1. Question 1

    Q1. During the Calvin cycle, the reduction of 3-phosphoglycerate produces a sugar that can be exported to the cytosol. What is this 3-carbon sugar?

    • A) RuBP
    • B) 3-phosphoglycerate
    • C) Oxaloacetate
    • D) Glyceraldehyde-3-phosphate

    Answer: Glyceraldehyde-3-phosphate

    Explanation: G3P is a three-carbon sugar phosphate and first carbohydrate product; RuBP is tempting but it is the five-carbon acceptor.