Photosynthesis Page 1

Light Reactions of Photosynthesis

 I. Survival of nearly all organisms ultimately depends on photosynthesis = main pathway by which carbon and energy enter the biosphere.

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• A. Autotrophs
• 1. Photoautotrophs
• 2. Chemoautotrophs
• B. Heterotrophs
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• II. Location of Light Reactions
• A. Leaves and Stems
• B. Cells with Chloroplasts
• C. Chloroplast membranes
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