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For each of the metabolic transformations (a) through (d), determine whether the compound on the left has undergone oxidation or reduction. Balance each transformation by inserting H-H and, where necessary, H₂O. (a) Reaction type (b) Reaction type (c) Reaction type (d) Reaction type CH₂-OH Methanol H-C-H Formaldehyde 0=C=0 Carbon dioxide OH OH | | CH₂-C-C H Glycerate + H H-C-H Formaldehyde Formate O Formate + H + H+ OH OH || CH₂-C- I H Glyceraldehyde Answer Bank oxidation +H-H +2H-H +3H-H reduction + H₂O + 2H₂O + 3H₂O

For each of the metabolic transformations (a) through (d), determine whether the compound on the left has undergone oxidation or reduction. Balance each transformation by inserting H-H and, where necessary, H₂O. (a) Reaction type (b) Reaction type (c) Reaction type (d) Reaction type CH₂-OH Methanol H-C-H Formaldehyde 0=C=0 Carbon dioxide OH OH | | CH₂-C-C H Glycerate + H H-C-H Formaldehyde Formate O Formate + H + H+ OH OH || CH₂-C- I H Glyceraldehyde Answer Bank oxidation +H-H +2H-H +3H-H reduction + H₂O + 2H₂O + 3H₂O

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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One biochemical strategy of many living organisms is the stepwise oxidation of organic compounds to CO₂ and H₂O and the conservation of a major part of the energy thus produced in the form of ATP. It is important to be able to recognize oxidation- reduction processes in metabolism. Reduction of an organic molecule results from the hydrogenation of a double bond (Eqn 1) or of a single bond with accompanying cleavage (Eqn 2). Conversely, oxidation results from dehydrogenation. In biochemical redox reactions, the coenzymes NAD and FAD dehydrogenate/hydrogenate organic molecules in the presence of the proper enzymes. CH₂ CH + H-H Acetaldehyde H reduction =(Q=F oxidation L CH₂-C +H+ +H-H Acetate reduction oxidation reduction oxidation CH₂-C CH₂- H H+ O-H reduction oxidation CH₂-C-H Ethanol CH, C-H+ o H Acetaldehyde (1)
Transcribed Image Text:One biochemical strategy of many living organisms is the stepwise oxidation of organic compounds to CO₂ and H₂O and the conservation of a major part of the energy thus produced in the form of ATP. It is important to be able to recognize oxidation- reduction processes in metabolism. Reduction of an organic molecule results from the hydrogenation of a double bond (Eqn 1) or of a single bond with accompanying cleavage (Eqn 2). Conversely, oxidation results from dehydrogenation. In biochemical redox reactions, the coenzymes NAD and FAD dehydrogenate/hydrogenate organic molecules in the presence of the proper enzymes. CH₂ CH + H-H Acetaldehyde H reduction =(Q=F oxidation L CH₂-C +H+ +H-H Acetate reduction oxidation reduction oxidation CH₂-C CH₂- H H+ O-H reduction oxidation CH₂-C-H Ethanol CH, C-H+ o H Acetaldehyde (1)
For each of the metabolic transformations (a) through (d), determine whether the compound on the left has undergone oxidation or reduction. Balance each transformation by inserting H-H and, where necessary, H₂O. (a) Reaction type (b) Reaction type (c) Reaction type (d) Reaction type CH₂-OH Methanol O H-C-H Formaldehyde 0=C=0 Carbon dioxide OH OH CH₂-C H Glycerate 0 + H+ O H-C-H Formaldehyde H O Formate =U Formate +H* + H+ OH OH I CH₂-C- 1 H Glyceraldehyde H Answer Bank oxidation +H-H + 2H-H + 3H-H reduction + H₂O +2H₂O + 3H₂O
Transcribed Image Text:For each of the metabolic transformations (a) through (d), determine whether the compound on the left has undergone oxidation or reduction. Balance each transformation by inserting H-H and, where necessary, H₂O. (a) Reaction type (b) Reaction type (c) Reaction type (d) Reaction type CH₂-OH Methanol O H-C-H Formaldehyde 0=C=0 Carbon dioxide OH OH CH₂-C H Glycerate 0 + H+ O H-C-H Formaldehyde H O Formate =U Formate +H* + H+ OH OH I CH₂-C- 1 H Glyceraldehyde H Answer Bank oxidation +H-H + 2H-H + 3H-H reduction + H₂O +2H₂O + 3H₂O
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