AP Bio Chapter 15 Study Guide - -The wit-moi photosynthesis...

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Unformatted text preview: -The wit-moi photosynthesis ocwr in the thvlekoid membranes. Light in the form of photons powers the transfer of 2 electrons and a proton from water to NAoP', forming more. A phosphate group and ADP are combined to form ATP in the process of photophocphuvletion. Wars. in the membrane of a chloroplast are composed of reaction mm surrounded by lime- M campuses. There are two kinds of photosystems. Photocvstem II {From functions first and absorbs light R ipaiofi: Eli-aid: ofwavelengthslenm Messiaen! (Miniowsanerxhisisaiinur Mil? A we“: election flow sometimes occurs, using only photosystem I. Light reactions include mm similar to that of the electron transport chain in mitochondria. NADPl-l and ATP are produced. L M‘- visible light :5 only a small segment. W can measure the ability of a pigment to absorb different wavelengths of light. I -Most plants are chg plants, and produce ~Theli§ttihdopendontmactimalso acidmmhollomlmMi known as the Ellen: cycle, occur in the plants are water-storing plants that strorna of the chloroplast. It undergo carbon-fhtation at night, Incorporates external C0; into the chloroplast via carbonflilatlon ATP and NADPH are used to convert C0; to available during the day. sugar. ADP, inorganic phosphates, and NADP‘ are also produced and reused in C Ll the light reactions. a C0 “Jfi‘fl‘h lei—«h ‘6 ‘ f’i a. incorporating CD; into organic acids and storing them in vacuoles until light is (.Af" (.J .53 (Hill! ‘I (am Gila-ids (Altai 4' fl) 3-phosphoglvcerate via carbon fixation in the Calvin cycle. Muslim occurs when there is a lack of C01, and O; is used in the Calvin cycle to produce a 2-carbon compound which Is then broken down by peroxisomes and mitochondria, releasing C02. This consumes ATP and produces no sugar. but serves as a protective measure when low co, levels could limit the Calvin cycle and result in damage. -C.. plants produce a 4-camon compound as the first product of carbon fixation. This occurs in plants with mummananmwe. (i no we '- ii—if'lfli'l’ palm-flied —_.___J——-———.— ...
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