Question

The primary CO 2 acceptor in Hatch and Slack pathway is:

• A. OAA
• B. PEP
• C. PGA
• D. RuBP

Answer 1

Answer:

B. PEP

• Phosphoenolpyruvate (PEP) is the 3-Carbon compound and acts as the primary CO2 acceptor in the mesophyll cells of C4 plants, leading to the formation of OAA (Oxaloacetic acid), C4 acid.

• The enzyme PEP carboxylase catalyses this reaction.