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Multiple Choice
Is the following reaction an oxidation or reduction? Which coenzyme would be carrying this out, NAD+ or NADH?
A
oxidation, NAD+
B
oxidation, NADH
C
reduction, NAD+
D
reduction, NADH
Verified step by step guidance
1
Identify the chemical structures involved in the reaction. The image shows malate being converted to oxaloacetate.
Examine the structural change from malate to oxaloacetate. Notice that the hydroxyl group (-OH) on the second carbon in malate is converted to a carbonyl group (C=O) in oxaloacetate.
Understand the concept of oxidation and reduction. Oxidation involves the loss of electrons or an increase in oxidation state, while reduction involves the gain of electrons or a decrease in oxidation state.
Determine the type of reaction. The conversion of an alcohol group to a carbonyl group involves the loss of hydrogen atoms, which is characteristic of oxidation.
Identify the coenzyme involved. NAD+ is typically involved in oxidation reactions, where it accepts electrons and is reduced to NADH.