Photosynthesis

Photosynthesis - Photosynthesis Thursday, January 29, 2009...

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Photosynthesis Thursday, January 29, 2009 9:28 AM 1. Photosynthesis o Takes light and makes an organic compound o Autotrophs-make own energy o Chloroplasts take sunlight energy gives off glucose and oxygen products. Mitochondria takes this and makes atp and energy 2. John Priestly's Observation in 1772 o A candle could be burned in a jar with a small plant There was oxygen o After some time the candle burned out Less oxygen o After a waiting period a candle could be burned again, without introducing outside air o A mouse could survive In the jar too 3. Photosynthesis o Leaf Anatomy Transparent Covering: Sunlight(Cuticle) Openings in covering (Stomata): CO 2 o Plants Need Water Sunlight Soil CO 2 o What is released during photosynthesis Oxygen o 12H 2 0 + 6CO 2 --- 6O 2 + C 6 H 12 O6 + 6 H 2 O o The oxygen produced by photosynthesis come from water o Light Reactions Light dependent. Convert light energy to chemical energy. (photo) Thylakoid Sunlight and water produce ATP(Energy), NADPH, and O 2 ATP and NADPH power dark reactions H 2 O Split (Giving off O 2 ) ATP formed via electron excited in photosynthesis o Dark Reactions Light independent and use chemical energy to synthesize organic compounds such as glucose Requires ATP and NADPH to make sugar Calvin Benson Cycle In stroma o Location and Structure of chloroplasts Chloroplast Outer membrane Inner membrane
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Thylakoid membrane Stack of thylakoid membrane - granum Surrounded by stroma Light travels through outer membranes and strikes the granum and its pigments Green is reflected because its not absorbed Chlorophyll is found inside of thylakoid membrane
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This note was uploaded on 11/05/2011 for the course BIOL 101 taught by Professor Hogan during the Fall '08 term at UNC.

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Photosynthesis - Photosynthesis Thursday, January 29, 2009...

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