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Identify the locations of and general functions of the light dependent and light...

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cenicienta | (Level 1) Valedictorian

Posted May 20, 2012 at 8:42 PM via web

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Identify the locations of and general functions of the light dependent and light independent (dark) phases (Calvin Cycle)

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jihyunkim67 | High School Teacher | (Level 1) Assistant Educator

Posted June 11, 2012 at 10:42 AM (Answer #1)

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Both the light dependant and light independent reactions are important steps in photosynthesis and require light to proceed. The major differences between these two reactions are where the reactions take place and what each reaction absorbs. The light reaction occurs in the grana and converts the light energy into a chemical energy in from of ATP and NADPH. By splitting a water molecule, the light reaction releases oxygen. The dark reaction takes place in the stroma and functions in changing CO2 into glucose from ATP and NADPH. The carbon fixation occurs by utilizing the ATP and NADPH that were produced in the light reactions earlier.

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