Question

$C{O}_2$ acceptor in $C_3$ plants is

• A. Xylulose-5-phosphate
• B. 3-phosphoglyceric acid
• C. Ribulose 1,5-biphosphate
• D. Phosphoenol pyruvic acid

Answer 1

The correct option is C Ribulose 1,5-biphosphate

Ribulose-1,5-bisphosphate carboxylase oxygenase, commonly known as RuBisCO is an enzyme involved in the first major step of carbon fixation, a process by which atmospheric $C{O}_2$ is accepted by RUBP and converted by plants to energy-rich molecules such as glucose. In chemical terms, it catalyzes the carboxylation of RuBP. It is the most abundant protein on Earth.