MDCAT Biology MCQ #361

In the Calvin cycle, the carboxylation of RuBP produces an unstable 6-carbon intermediate that immediately splits into which stable molecule?

MDCAT Biology MCQ #361

  1. Question 1

    Q1. In the Calvin cycle, the carboxylation of RuBP produces an unstable 6-carbon intermediate that immediately splits into which stable molecule?

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

    Answer: 3-phosphoglycerate

    Explanation: The unstable 6-carbon intermediate immediately splits into two 3-carbon phosphoglycerates. RuBP (Option D) is the 5-carbon CO2 acceptor.