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Multiple Choice
NAD+ is an electron carrier that also carries which of the following functional groups during redox reactions?
A
Carboxyl group (COOH)
B
Hydroxyl group (OH)
C
Methyl group (CH3)
D
Hydride ion (H-)
Verified step by step guidance
1
Understand the role of NAD+ in redox reactions: NAD+ (Nicotinamide adenine dinucleotide) is a coenzyme that functions as an electron carrier in metabolic reactions.
Recognize the type of reaction: In redox reactions, NAD+ is reduced to NADH by accepting electrons.
Identify the specific group transferred: During the reduction process, NAD+ accepts a hydride ion (H-), which consists of two electrons and one proton.
Differentiate between functional groups: A hydride ion (H-) is different from the functional groups listed (carboxyl, hydroxyl, methyl) as it is specifically involved in electron transfer.
Conclude the role of NAD+: The primary function of NAD+ in these reactions is to carry and transfer electrons in the form of a hydride ion (H-), facilitating the redox process.