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August 20, 2025, 05:37:56 am
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Author Topic: Is the Calvin Cycle pretty much the same thing as the light-independent stage?  (Read 2405 times)  Share 

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Chromeo33

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Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« on: April 10, 2011, 09:03:35 am »
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There seems to be a bit of confusion amongst my class about this..

Or is the Calvin Cycle just ONE portion of the light-independent stage of photosynthesis?
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Charmz

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #1 on: April 10, 2011, 09:37:50 am »
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The Calvin Cycle is the same as the light-independent stage.
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Christiano

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #2 on: April 10, 2011, 11:10:39 am »
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Yes, this was pointed out in douchy's podcast :D
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Chromeo33

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #3 on: April 10, 2011, 12:35:23 pm »
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Oh, I don't listen to Douchy..
Can someone link me to him/her?
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Christiano

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #4 on: April 10, 2011, 01:35:49 pm »
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simpak

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #5 on: April 10, 2011, 02:56:42 pm »
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Yep, the C cycle describes allll of the reactions which occur in the light independent stage.
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Chromeo33

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #6 on: April 11, 2011, 11:47:24 pm »
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HERculina

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #7 on: April 12, 2011, 05:36:03 pm »
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how is water made in the calvin cycle?
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Chromeo33

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #8 on: April 12, 2011, 05:53:42 pm »
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Umm i don't think water's made in the calvin cycle at all
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HERculina

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #9 on: April 12, 2011, 05:55:19 pm »
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where is it made then
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Chromeo33

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #10 on: April 12, 2011, 05:58:41 pm »
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The whole photosynthesis process doesn't result in a net production of water, photosynthesis TAKES UP water in its first stage (the light-dependent stage).
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HERculina

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #11 on: April 12, 2011, 06:05:55 pm »
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but isnt the equation for photosynthesis:
12H2O + 6CO2 --> C6H12O6 + 602 + 6H20

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Chromeo33

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #12 on: April 12, 2011, 06:26:27 pm »
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Yeah technically..

But we minus the 6H20 from both sides of the equation to get the "net" production (can someone clarify this?)
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Chromeo33

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #13 on: April 12, 2011, 06:27:03 pm »
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Yeah so now I'm confused..

Where does the water come from!?
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lexitu

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Re: Is the Calvin Cycle pretty much the same thing as the light-independent stage?
« Reply #14 on: April 12, 2011, 06:31:41 pm »
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During the light-dependent stage water is split, and carriers are loaded with H+ ions.

Most of the H+ goes into glucose synthesis, but notice how there would be some "leftover" hydrogen ions. These combine with oxygen to "make" water. Look at both sides of the overall equation, it's important to recognise what needs to occur for the equation to actually hold true.
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