Chapter 7 (2)

Chapter 7 (2) - Chapter 7 9/25/09 Photosynthesis o CO2 +...

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Chapter 7 9/25/09 Photosynthesis o CO 2 + H 2 O –energy from sun-> C 6 H 12 O 6 + O 2 Photosynthetic pigments o Chlorophyll = key photosynthetic pigment Absorbs violet, blue, and red light Reflects green light o Carotenoids = accessory pigment Absorbs blue and green light Reflects yellow, orange, and red What color of light is least effective at driving photosynthesis? Green Light-dependent reactions o Photo part of photosynthesis o Pigments absorb light energy, give up e-, which enter electron transfer chains o ATP and NADPH are formed o Water molecules are split and O 2 is released o Pigments that gave up electrons get replacements Where in the plant cell is chlorophyll found? In the thylakoids Chemiosmotic model of ATP formation o Electrical and H+ concentration gradients are created between thylakoid interior and stroma o H+ flows down gradients into stroma through ATP synthase o Flow of H+ drives formation of ATP Which statement is TRUE regarding the light-dependent reactions? Without water, the
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This note was uploaded on 03/20/2012 for the course BIOL 1001 taught by Professor Minor during the Fall '08 term at LSU.

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Chapter 7 (2) - Chapter 7 9/25/09 Photosynthesis o CO2 +...

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