Problem Set 3 S10 KEY

3 problem set 3 chapters 8 10 bild1 spring 2010 d r

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Unformatted text preview: m Set 3 Chapters 8-10 BILD1 / Spring 2010 D r. Kiger 14) Outline the sequence of chemical changes that occur in mammalian muscle cells when oxygen is depleted. In the absence of O2, glycolysis remains active to produce 2 molecules of pyruvate, 2 ATP and 2 NADH per glucose. When O2 is depleted, the e- transport chain cannot recycle NAD+ from NADH so NAD+ becomes depleted. Glycolysis stops. To survive, the muscle cell begins fermentation to regenerate NAD+ while converting pyruvate to lactic acid. Glycolysis can now continue, but only produces 2 ATP per glucose molecule under anaerobic conditions. Photosynthesis 15) Fill in the blanks. (a) What are the three inputs to photosynthesis? Light, CO2, H20. (b) Where in the plant cell does photosynthesis take place? Chloroplasts. (c) Which photosystem is responsible for the production of Oxygen? PSII via cleavage of H2O. (d) Does the production of Oxygen occur during cyclic photophosphorylation or noncyclic photophosphorylation? Noncyclic photophosphorylation. (e) What are...
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This note was uploaded on 10/16/2010 for the course BILD 1 taught by Professor Boulanger during the Spring '08 term at UCSD.

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