<Dl> <Dd> 3 CO 2 + 6 NADPH + 6 H + 9 ATP → glyceraldehyde - 3 - phosphate (G3P) + 6 NADP + 9 ADP + 3 H 2O + 8 P (P = inorganic phosphate) </Dd> </Dl> <Dd> 3 CO 2 + 6 NADPH + 6 H + 9 ATP → glyceraldehyde - 3 - phosphate (G3P) + 6 NADP + 9 ADP + 3 H 2O + 8 P (P = inorganic phosphate) </Dd> <P> Hexose (six - carbon) sugars are not a product of the Calvin cycle . Although many texts list a product of photosynthesis as C 6H 12 O 6, this is mainly a convenience to counter the equation of respiration, where six - carbon sugars are oxidized in mitochondria . The carbohydrate products of the Calvin cycle are three - carbon sugar phosphate molecules, or "triose phosphates," namely, glyceraldehyde - 3 - phosphate (G3P). </P> <P> In the first stage of the Calvin cycle, a CO molecule is incorporated into one of two three - carbon molecules (glyceraldehyde 3 - phosphate or G3P), where it uses up two molecules of ATP and two molecules of NADPH, which had been produced in the light - dependent stage . The three steps involved are: </P>

Which of these is not a part of the calvin-benson cycle