Question

what are the three stages of Calvin Cycle explain​

Answer 1

$\large{\underline{{\boxed{\textbf{Calvin\: Cycle}}}}}$

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${\bold{{\underline{ Calvin \: Cycle \:1st\: Stage \: :}}}}$

Carboxylation → It is the process of fixation of carbon dioxide into stable organic intermediate.

It is the most crucial step of the Calvin cycle where carbon dioxide is utilised for the carboxylation of RuBP.

The reaction is catalysed by the enzyme RuBP carboxylase which results in the formation of two molecules of 3- PGA.

Since the enzyme also has an oxygenation activity it would be more correct to call it RuBP carboxylase-oxygenase.

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${\bold{{\underline{ Calvin \: Cycle \:2nd\: Stage \: :}}}}$

Reduction → These is a series of reactions that lead to the formation of glucose.

The steps involve in utilisation of two molecules of ATP for Phosphorylation and two of NADPH for reduction per CO2.

Six turns of the cycle are required for the formation of one molecule of glucose.

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${\bold{{\underline{ Calvin \: Cycle \:3rd\: Stage \: :}}}}$

Regeneration → Regeneration of Carbon dioxide acceptor molecule RuBP is crucial if the cycle is to continue uninterrupted.

The regeneration steps required one ATP for the phosphorylation to form RuBP.

Answer 2

Explanation:

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