Question

The Calvin cycle proceeds in three stages.
1. Reduction, during which carbohydrates is formed at the expense of the photochemically made ATP and NADPH.
2. Regeneration, during which the carbon dioxide acceptor ribulose-1,5- biphosphate.
3. Carboxylation, during which carbon dioxide combines with ribulose-1,5- biphosphate.
Identify the correct sequence from the following-

A. 3, 1, 2
B. 3, 2, 1
C. 1, 2, 3
D. 2, 1, 3
E. None of the above

Answer 1

Hint:
The Calvin cycle, light-independent reactions, biosynthetic segment, darkish reactions, or photosynthetic carbon reduction cycle of photosynthesis are the chemical reactions that convert carbon dioxide and different compounds into glucose. These reactions occur inside the stroma, the fluid-crammed place of a chloroplast outdoor the thylakoid membranes. These reactions take the goods of light-structured reactions and perform similarly chemical methods on them.

Complete step by step answer:
In carbon fixation, a molecule from the ecosystem combines with a five-carbon acceptor molecule called ribulose- one,five-bisphosphate.
The ensuing six-carbon compound is then cut up into two molecules of the three-carbon compound, three-phosphoglyceric acid.
This reaction is catalyzed using the enzyme Rubisco three, five bi-phosphate carboxylase/oxygenase, Due to the key function it plays in photosynthesis, might be the most considerable enzyme on Earth.
Reduction, In the second stage of the Calvin cycle, the three-phosphor glyceric acid molecules created through carbon fixation are transformed into molecules of simple sugar – glyceraldehyde-3 phosphate.
This degree uses electricity from adenosine triphosphate created inside the light-structured reactions of photosynthesis. In this manner, the Calvin cycle becomes how flora converts electricity from sunlight into lengthy-time period storage molecules, which includes sugars. The energy is transferred to the sugars.
This step is referred to as “reduction” and donates electrons to the three-phosphoglyceric acid molecules to create glyceraldehyde-three phosphate. In chemistry, the system of donating electrons is called “discount,” whilst the process of taking electrons is called “oxidation.”
Regeneration, Some glyceraldehyde-Three phosphate molecules visit to make glucose, even as others must be recycled to regenerate the five-carbon RuBP compound that is used to just accept new carbon molecules.
The regeneration manner calls for Adenosine triphosphate. It is a complex method involving many steps.
Because it takes six-carbon molecules to make glucose, this cycle ought to be repeated six times to make an unmarried molecule of glucose.
Option (A) 3, 1, 2 is the correct answer.

Note:
Each turn of the Calvin cycle “fixes” one molecule of carbon that can be used to make sugar. It takes three turns of the Calvin cycle to create one molecule of glyceraldehyde-three phosphate. After six turns of the Calvin cycle, two molecules of glyceraldehyde-three phosphate may be blended to make a glucose molecule