Chapter 23, Problem 23.34EP

(a)

Interpretation Introduction

Interpretation: To indicate whether $\text{NADH}$ notation denotes the oxidized or reduced form of the molecule.

Concept introduction: Nicotinamide adenine dinucleotide is a coenzyme which is employed in various metabolic reactions. It generally undergoes redox reactions in various metabolic pathways. Redox reactions involve oxidation and reduction reaction occurring simultaneously so that one species is oxidized and the other one is reduced. The species that gain hydrogen or electron is known as reduced form and the species that loss hydrogen or electron is known as oxidized form. The general representation of redox reaction is

$\text{A}+{\text{H}}^{+}+{\text{e}}^{\text{-}}\to \text{AH}$

Here A is oxidized form and AH is reduced form.

(b)

Interpretation Introduction

Interpretation: To indicate whether ${\text{NAD}}^{+}$ notation denotes the oxidized or reduced form of the molecule.

Concept introduction: Nicotinamide adenine dinucleotide is a coenzyme which is employed in various metabolic reactions. It generally undergoes redox reactions in various metabolic pathways. Redox reactions involve oxidation and reduction reaction occurring simultaneously so that one species is oxidized and the other one is reduced. The species that gain hydrogen or electron is known as reduced form and the species that loss hydrogen or electron is known as oxidized form. The general representation of redox reaction is

$\text{A}+{\text{H}}^{+}+{\text{e}}^{\text{-}}\to \text{AH}$

Here A is oxidized form and AH is reduced form.