BIOC 431 Exam 3 F12

Write a balanced equation showing the conversion of

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Unformatted text preview: sible under cellular conditions. Describe these rearrangements. (4 points) 6- phosphonoglucolactone undergoes spontaneous ring opening with a large negative free energy to produce the gluconate The β- keto acid intermediate generated by 6- phosphonogluconate dehydrogenase undergoes spontaneous, irreversible elimination of CO2 [3] The reductive pentose phosphate pathway (or Calvin cycle) incorporates CO2 into organic compounds through the activity of the enzyme Rubisco. (a) The products of Rubisco are converted to glyceraldehyde- 3- phosphate by two enzymes of gluconeogenesis. Write a balanced equation showing the conversion of the CO2 fixation products to glyceraldehyde- 3- phosphate. (6 points) 3- phosphoglycerate + ATP + NADPH - > glyceraldehyde- 3- phosphate + ADP + Pi + NAD+ Page | 2 (b) The net gain after three cycles of the reductive pentose phosphate pathway is one molecule of triose- phosphate. This is exported from the chloroplast by facilitated diffusion in exchange for inorganic phosphate. i. H...
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This note was uploaded on 02/06/2014 for the course BIOC 431 taught by Professor Concettadirusso during the Fall '13 term at UNL.

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