3. The nicotinamide coenzymes (see Fig. 13-24) can undergo reversible redox reactions with specific substratesin the presence of the appropriate redox enzyme. In these reactions NADH + H* serves as the hydrogen sourceas described in problem 1 above. In the reactions below, IF a redox change has occurred balance the reactionwith the necessary amounts of NAD+, NADH, H* and H2O. The objective is to recognize when a redox enzymeis necessary in a metabolic reaction. (adapted from Problem 5, chapter 16)(a)CH,CH,OHCH,H.EthanolAcetaldehyde(d)CH,-CH,+ co2OPO OHOPo? OHсH, — с —с`OPO;-PyruvateAcetate(b)CH,-C-C+ HPO?онTH.H.(e) -оос— сн, —с— соо--оос— сн, — с — соо-1,3-BisphosphoglycerateGlyceraldehyde 3-phosphateHOxaloacetateMalate(c)сH, — с —ссн, —с+ co2сH, — с — сн-+ H*+ CH,- C-CH; + Co,(f)PyruvateAcetataldehydeAcetoacetateAcetone

Nicotinamide coenzymes are used in the oxidation-reduction reactions in biological systems. The…

3. The nicotinamide coenzymes (see Fig. 13-24) can undergo reversible redox reactions with specific substrates in the presence of the appropriate redox enzyme. In these reactions NADH + H* serves as the hydrogen source as described in problem 1 above. In the reactions below, IF a redox change has occurred balance the reaction with the necessary amounts of NAD*, NADH, H* and H20. The objective is to recognize when a redox enzyme is necessary in a metabolic reaction. (adapted from Problem 5, chapter 16) (a) CH,CH,OH CH,- Ethanol Acetaldehyde (d) CH, + co, OPo; OH CH,-C-C `OPo}- OPo; OH CH,-C-C Pyruvate Acetate (b) + HPO он (e) оос— сн, —с— соо- -оос — сн, — с—соо- 1,3-Bisphosphoglycerate Glyceraldehyde 3-phosphate H Oxaloacetate Malate CH,-C-C CH,- + co, (c) (f) сн, — с— сн, — с + H* сн, — с—сн, + со, Pyruvate Acetataldehyde Acetoacetate Acetone

3. The nicotinamide coenzymes (see Fig. 13-24) can undergo reversible redox reactions with specific substrates in the presence of the appropriate redox enzyme. In these reactions NADH + H* serves as the hydrogen source as described in problem 1 above. In the reactions below, IF a redox change has occurred balance the reaction with the necessary amounts of NAD, NADH, H and H20. The objective is to recognize when a redox enzyme is necessary in a metabolic reaction. (adapted from Problem 5, chapter 16) (a) CH,CH,OH CH,- Ethanol Acetaldehyde (d) CH, + co, OPo; OH CH,-C-C `OPo}- OPo; OH CH,-C-C Pyruvate Acetate (b) + HPO он (e) оос— сн, —с— соо- -оос — сн, — с—соо- 1,3-Bisphosphoglycerate Glyceraldehyde 3-phosphate H Oxaloacetate Malate CH,-C-C CH,- + co, (c) (f) сн, — с— сн, — с + H* сн, — с—сн, + со, Pyruvate Acetataldehyde Acetoacetate Acetone

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter6: Metabolism

Section: Chapter Questions

Problem 7RQ: Which of the following comparisons or contrasts between endergonic and exergonic reactions is false?...

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