Multiple choice

Which of the following molecules acts as primary acceptor of CO2 in photosynthesis?

  1. Oxaloacetic acid

  2. 3-phosphoglyceric acid

  3. Ribulose bisphosphate

  4. Pyruvic acid

  5. Triose phosphate

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The acceptor molecule of CO2 is a 5-carbon ketose sugar – Ribulose bisphosphate (RuBP) which gets converted to two molecules of 3-phosphoglyceric acid in presence of RuBP carboxylase-oxygenase.