Mohammad C Secure https://learn.kent.edu/bbcswebdav/pid-8152838-dt-content-rid-9

Question

Mohammad C Secure https://learn.kent.edu/bbcswebdav/pid-8152838-dt-content-rid-94838813_1/courses/11331-11342-22012-22032.201810/Problem%20set%20%20ch%20.-Q ? Problem set Ch. 3,13, 14,16 for 4.13.18(1).pdf 1 16 A favorable reaction such as oxidation of glucose in a cell (a) has a positive free energy change (AG). (b) has no change in free encrgy (AG). (c) has a negative free energy change (AG). (d) requires ATP hydrolysis 2. Favorable reactions such as oxidation of glucose . (a) decrease entropy (b) have no effect on entropy (c) increase free cnergy (AG) (d) increase entropy 3. The oxidation of glucose in cells is a (a) catabolic (b) favorable (c) anabolic (d) a and b (e) b and o reaction. 4.Although ATP and NADH are both important activated carrier molecules, ATP hydrolysis provides the direct molecular energy for most biochemical reactions. Why do thc mitochondria also nccd to gencrute high levels of NADH? (a) NADH from the cytoplasm can freely diffuse in to mitochondria (b) NADH donates high energy electrons to the electron transport chain (c) NADH is oxidized in the citric acid cycle (d) NADH is reduced in the electron transport chain

Explanation / Answer

Answer.1 (C) has a negative free energy change (delta G) because negative delta G means spontaneous or favourable reaction.

Answer 2. Decrease entropy because lower entropy stabilise the reaction.

Answer 3. Both catabolic and favorable. As in glycolysis glucose is broken down into pyruvate that is favorable and catabolic process.

Answer 4. NADH donates high energy electron to electron transport chain (ETC) . As in ETC more electron are needed for synthesis of ATP.

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