Multiple choice

The major enzyme(s) that catalyze(s) the reduction of carbon dioxide is/are called ____________.

  1. Ribulose bisphosphate (RuBP)

  2. Phosphoglyceraldehyde (PGAL)

  3. PEP carboxylase (PEPcase)

  4. All of above

  5. None of these

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

While Rubisco is the primary enzyme for CO2 fixation in C3 plants, PEP carboxylase is the major enzyme that catalyzes the initial fixation of CO2 in C4 and CAM plants.