MDCAT Biology MCQ #388

In high oxygen and low carbon dioxide conditions, Rubisco acts as an oxygenase. Which two-carbon compound is produced as a result of this reaction?

MDCAT Biology MCQ #388

  1. Question 1

    Q1. In high oxygen and low carbon dioxide conditions, Rubisco acts as an oxygenase. Which two-carbon compound is produced as a result of this reaction?

    • A) Glycerate
    • B) Phosphoglycolate
    • C) Malate
    • D) Oxaloacetate

    Answer: Phosphoglycolate

    Explanation: Photorespiration produces phosphoglycolate (2C) and PGA (3C); Malate and oxaloacetate are associated with C4 and CAM pathways.