Answer: 3
How many ATP molecules are need in Calvin Cycle to regenerate RuBP from 5 G3P molecules?

The Calvin cycle Calvin–Benson–Bassham (CBB) cycle reductive pentose phosphate cycle (RPP cycle) or C3 cycle is a series of biochemical redox reactions that take place in the stroma of chloroplast in photosynthetic organisms. The cycle was discovered in 1950 by Melvin Calvin James Bassham and Andrew Benson at the University of California Berkeley by using the radioactive isotope carbon-14.

The GP is converted to D-glyceraldehyde 3-phosphate ( G3P ) using the energy in ATP and the reducing power of NADPH as part of the Calvin cycle . This returns ADP phosphate ions Pi and NADP+ to the light-dependent reactions of photosynthesis for their continued function. RuBP is regenerated for the Calvin cycle to continue.

Calvin cycle - Wikipedia

Calvin cycle - Wikipedia

Glyceraldehyde 3-phosphate - Wikipedia

RuBisCO - Wikipedia

RuBisCO is one of many enzymes in the Calvin cycle .When Rubisco facilitates the attack of CO 2 at the C2 carbon of RuBP and subsequent bond cleavage between the C3 and C2 carbon 2 molecules of glycerate-3-phosphate are formed. The conversion involves these steps: enolisation carboxylation hydration C-C bond cleavage and protonation. Substrates ...

Ribulose 1 5 -bisphosphate ( RuBP ) is an organic substance that is involved in photosynthesis.It is a colourless anion a double phosphate ester of the ketopentose (ketone-containing sugar with f...


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