Question

gnment Score: 57% Resources Hint Check Answer tion 3 of 5 > Arrange the steps to outline the Calvin cycle. First stage Last stage Answer Bank formation of 3-phosphoglycerate fixation of CO, with ribulose 1.5-bisphosphate regeneration of ribulose 1.5-bisphosphate conversion of 3-phosphoglycerate into hexose ched to full screen (Esc to excit) Okay Exit now a RO u

Answer 1

The answer will be-

First step $\rightarrow$ Fixation of CO2 with ribulose 1,5-bisphosphate

Second step $\rightarrow$ Formation of 3-phosphoglycerate

Third step $\rightarrow$ Conversion of 3-phosphoglycerate into hexose

Last step $\rightarrow$ Regeneration of ribulose 1,5-bisphosphate

Explanation: Calvin cycle is the second stage of photosynthesis & the reaction in this phase is independent of light. Carbon in the air is fixed into sugar molecules through this phase. The first step of Calvin cycle is carbon fixation, where CO2 is reacted with ribulose 1,5-bisphosphate to form two molecules of 3-phosphoglycerate. In the reduction stage, 3-phosphoglycerate is reduced to gleceraldehyde-3-phosphate. Some of the gleceraldehyde-3-phosphate is converted to hexose sugar & others use to regenerate ribulose 1,5-bisphosphate in the regeneration step.