Week 2, Lecture 2, Photosynthesis

Week 2, Lecture 2, Photosynthesis - Porphyrin Ring Free...

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Photosynthesis Photosynthesis Free Food Free Food B I O L O G Y 0 2 3 30-Dec-09 Gardiner 2 Light Harvesting Complexes How Chloroplasts Capture Light Energy and Convert it to Chemical Energy 30-Dec-09 Gardiner 3 Light-dependent reactions • also known as light reactions, photochemical reactions • location: thylakoid membranes Porphyrin Ring Magnesium Photosynthesis Light Photochemical reactions thylakoid membranes In Out light ATP /NADPH P 680 / P 700 energy rich H 2 O 1) Non-cyclic electron flow 2) Cyclic electron flow Carbon fixation reactions in stroma CO 2 Calvin Cycle Carbohydrates (CHO) molecules
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B I O L O G Y 0 2 3 30-Dec-09 Gardiner 7 NADPH Nicotinamide-adenine-dinucleotide Involved in many biochemical redox processes It serves as an electron acceptor in the enzymatic removal of hydrogen ions form specific substrates 30-Dec-09 Gardiner 8 Light Harvesting Complexes • Reaction Centre Pigments – Chlorophyll a –P 680 and P 700 • Accessory Pigments – Chlorophyll b, c, d, etc. . – Carotenoids – pass energy to reaction centre 30-Dec-09 Gardiner 9 Light Harvesting Complex • Antenna Pigments – 300 Chlorophyll a (1 reaction centre chl a) and other accessory pigments (chls, carots, etc. .) • Content varies according to specific
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This note was uploaded on 04/18/2010 for the course BIOLOGY 1223 taught by Professor Gardiner/lajoie during the Fall '09 term at UWO.

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Week 2, Lecture 2, Photosynthesis - Porphyrin Ring Free...

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