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please i need answer

2007-03-01 15:35:53 · 4 answers · asked by gurly girl 1 in Science & Mathematics Biology

4 answers

The Calvin cycle (or Calvin-Benson cycle or carbon fixation) is a series of biochemical reactions that takes place in the stroma of chloroplasts in photosynthetic organisms. It was discovered by Melvin Calvin and Andrew Benson at the University of California, Berkeley. James Bassham also made important contributions to elucidating this pathway. It is one of the light-independent reactions or dark reactions.
During photosynthesis, light energy is used to generate chemical free energy, stored in glucose. The light-independent Calvin cycle, also (misleadingly) known as the "dark reaction" or "dark stage", uses the energy from short-lived electronically-excited carriers to convert carbon dioxide and water into organic compounds that can be used by the organism (and by animals which feed on it). This set of reactions is also called carbon fixation. The key enzyme of the cycle is called RuBisCO. In the following equations, the chemical species (phosphates and carboxylic acids) exist in equilibria among their various ionized states as governed by the pH.

2007-03-01 16:54:27 · answer #1 · answered by MILIND 2 · 0 0

Photosynthesis happens in two reactions---- a light reaction that requires light (photosynthesis)

And a dark reaction, the (Calvin cycle) that does not require light.

2007-03-01 16:12:40 · answer #2 · answered by Diamond in the Rough 6 · 0 0

calvin cyale takes place in the dark reaction of photosynthesis.

2007-03-01 15:43:54 · answer #3 · answered by nan 2 · 0 0

it takes place in both cycles. The calvin cycle changes ADP to ATP.

2007-03-01 15:45:59 · answer #4 · answered by Alex 1 · 0 0

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