Biology 1202B Lecture Notes - Lecture 8: Anoxygenic Photosynthesis, Accessory Pigment, Atp Synthase

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Photoautothrophs- use photons as a source of energy to make their own food. Carbon in carbon dioxide in the air. The rst organisms to perform oxygenic photosynthesis. Anoxygenic photosynthesis- using other molecules such as h2s and fe2+ as electron donors. Biproducts- sulfur & iron in another form. Easy to break this bond & use the energy to do work. G3p is the starting point of all molecules. Photosystem ii- the only thing that can oxidize water. Capture light energy by pigment molecules and energy used to synthesize both atp and. Water split, electrons passed on to nadp+, converted to nadph. Atp made from atp synthase, energy to make atp comes from photons. Both of these together are required for the calvin cycle to function. Electrons carried by nadph and atp energy used to convert co2 from inorganic to organic form. Atp made in the chloroplast stays in the chloroplast. The rest of the cell is getting atp through cellular respiration.

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