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Dictionary » C » Calvin-Benson cycle

Calvin-Benson cycle

Definition

noun

A cyclical series of biochemical reactions that occur in the stroma of chloroplasts during photosynthesis. It includes the light-independent reactions such as carbon fixation, reduction reactions and ribulose 1,5-diphosphate (RuDP) whereby sugars and starch are ultimately produced.


Supplement

At this stage of photosynthesis, the energy released from ATP produced during light reactions is used to drive the conversion of carbon dioxide and other compounds into an organic molecule (e.g. glucose).

In C3 plants, the Calvin-Benson cycle is used directly to fix carbon dioxide. In C4 plants and CAM plants, a different carbon fixation precedes Calvin-Benson cycle.


Word origin: named after its discoverers, Melvin Calvin, James Bassham (and Andrew Benson) at the University of California, Berkeley.

Variants: Calvin cycle or Calvin- Benson-Bassham cycle

See also: Photosynthesis on Tutorials for further information.


Please contribute to this project, if you have more information about this term feel free to edit this page



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Re: CHALLENGE: Why should there be an “origin of species”?

1. origin is one point, evolution is process. To have cycle, you have to have process. "Micelle to liposome to bacteria thing..." ... provide intermediate metabolites for amino acids metabolism etc., Calvin cycle's purpose is to bind CO2 and convert it into sugar. I'm not saying ...

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by JackBean
Sun May 05, 2013 2:13 pm
 
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If we're supposed to have the same amount of Calvin cycle-chemicals before and after, then how many C3 molecules can you make from 48 C1 molecules? If you ...

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by JackBean
Mon Sep 10, 2012 4:03 pm
 
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calvin cycle question

If 48 molecules of CO2 enter the Calvin Cycle, How many molecules of glyceraldehyde phosphate (PGAL) leave the cycle? How many molecules of ribulose ...

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by Anonymous
Mon Sep 10, 2012 6:13 am
 
Forum: General Discussion
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is the CO2 produced by photorespiration...

... as all other gases, it may leave the leaf :) or be trapped in the Calvin cycle.

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by JackBean
Thu Dec 08, 2011 12:47 pm
 
Forum: Botany Discussion
Topic: is the CO2 produced by photorespiration...
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is the CO2 produced by photorespiration...

is the CO2 produced by photorespiration go to the calvin cycle? (the calvin cycle input) Thanks!

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by rchow202
Tue Dec 06, 2011 1:03 am
 
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