Photosynthesis - PHOTOSYNTHESIS I. Overview of...

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PHOTOSYNTHESIS I. Overview of Photosynthesis What kinds of cells carry out photosynthesis? Some Plant cells, algae, bacteria (prokaryotes) Where does most of a trees biomass come from? What is the ultimate source of the carbon in all those organic molecules in your body? CO 2 II. Light-dependent reactions (in thylakoids) A. Absorption of Light Energy Light 12 H 2 O + 12 NADP + + 18 ADP + 18 P i → 6 O 2 + 12 NADPH + 18 ATP Chlorophyll 1. Electromagnetic Spectrum Why is visible Light the part of the electromagnetic spectrum that is the most important in biological processes that use electromagnetic energy? Visible light represents a small fraction of the electromagnetic spectrum and consists of a mixture of a wavelengths ranging from 380 to 760 nm. The energy from visible light is used in photosynthesis. 2. Photosynthetic Pigments a. Structure of Chlorophyll What part of a chlorophyll molecule is involved in capture of light energy? The porphyrin ring is made up of joined smaller rings composed of carbon and nitrogen atoms; the porphyrin ring absorbs light energy. What is the function of the hydrocarbon side chain?
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This note was uploaded on 02/28/2009 for the course BIOLOGY 101 taught by Professor Martin during the Fall '08 term at Rutgers.

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Photosynthesis - PHOTOSYNTHESIS I. Overview of...

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