Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
Ribulose diphosphate carboxylase enzyme catalyses the carboxylation reaction between:
BiologyPhotosynthesis in Higher PlantsNEET
Options:
  • A Oxaloacetic acid and acetyl CoA
  • B CO2 and ribulose 1,5 diphosphate
  • C Ribulose diphosphate and phosphoglyceraldehyde
  • D PGA and dihydroxyacetone phosphate
Solution:
2891 Upvotes Verified Answer
The correct answer is: CO2 and ribulose 1,5 diphosphate
The first step of the Calvin cycle is carboxylation in which enzyme RuBisCO enzyme catalyses the fixation of CO2, in which initial CO2 acceptor is a 5C compound ribulose 1,5 diphosphate. It forms first stable compound, which is 3C PGA.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.