In sugarcane, ¹⁴CO₂ is fixed in malic acid. The enzyme is

A. RuBP carboxylase

B. PEP carboxylase

C. Ribulose phosphate kinase

D. Fructose phosphatase

Answer: Option B

Solution(By Examveda Team)

In sugarcane, ¹⁴CO₂ is fixed in malic acid. The enzyme is PEP carboxylase.
Phosphoenolpyruvate carboxylase is an enzyme in the family of carboxy-lyases found in plants and some bacteria that catalyzes the addition of bicarbonate (HCO₃^-) to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate and inorganic phosphate.
This reaction is used for carbon fixation in CAM and C₄ organisms, as well as to regulate flux through the citric acid cycle in bacteria and plants.