Chapter 18.5, Problem 18.11P

Interpretation Introduction

Interpretation:

Role of NADH in conversion of pyruvate to lactate has to be determined. Also, role of NADH in conversion of pyruvate to ethanol has to be determined.

Concept Introduction:

In metabolic pathways, many reactions involve coenzymes. These coenzymes are involved in oxidation and reduction reactions and can serve as oxidizing and reducing agents.

Oxidizing agent reduces to complete oxidation reaction while reducing agent oxidizes to complete reduction reaction.

More convenient way to spot oxidation and reduction reaction is from transfer of ${\text{H}}^{+}$ and ${\text{e}}^{-}$. If coenzyme gains ${\text{H}}^{+}$ and ${\text{e}}^{-}$ then it termed as reduced form and if coenzyme loses ${\text{H}}^{+}$ and ${\text{e}}^{-}$ then it termed as oxidized form.