Question

An enzyme that assimilates carbon dioxide into the Calvin cycle is

• A. Rubisco
• B. Pepco
• C. Catalase
• D. PEP carboxylase
• E. Malate hydrogenase

Answer 1

The correct option is A Rubisco

Calvin cycle is a photosynthetic process that takes place without sunlight. It has 3 steps. In the first stage (fixation), CO2 is fixed from inorganic to organic molecule (3 PGA). During this process, ribulose bisphosphate carboxylase (RuBisCo) and ribulose bisphosphate (RuBP) is required. RuBisCo acts as a catalyst in this CO${}_2$ fixation reaction.