Question

Ribulose diphosphate carboxylase enzyme catalyzes the carboxylation reaction between

• A. Oxaloacetic acid and acetyl CoA
• B. $C{O}_2$ and ribulose 1,5 diphosphate
• C. Ribulose diphosphate and phosphoglyceraldehyde
• D. PGA and dihydroxy acetone phosphate

Answer 1

The correct option is B $C{O}_2$ and ribulose 1,5 diphosphate

• RUBISCO is a very large four-subunit enzyme present in the chloroplast stroma and catalyzes the carboxylation of RuBP followed by immediate splitting of unstable product into 3 phosphoglyceraldehydes.
• Transaldolase catalyzes the condensation of PGA and dihydroxyacetone phosphate and formation of fructose 1,6 bisphosphate. Citrate synthetase catalyzes the reaction of oxaloacetic acid and acetyl CoA a formation of citrate.

Correct answer is B.