Chapter 21, Problem 21.65AP

Interpretation Introduction

Interpretation:

The atom that undergoes oxidation and reduction in cytochromes and in coenzyme Q should be identified.

Concept Introduction:

Oxidation: The oxidation is reaction that involves addition of oxygen atom or loss of electrons or removal of hydrogen atom present in the chemical compound.

Reduction: It involves removal of oxygen or addition of hydrogen to the chemical compound.

Coenzyme: They are non-proteins molecules which helps enzymes for catalyzing the reaction.

Cytochromes: They are heme-containing proteins that transfer electrons in cell respiration that occur in mitochondria.

Heme: The iron containing compound that is iron $\left(II\right)$ ion present inside porphyrin ring is termed as heme.  Porphyrin – Four pyrroles connected through methane bridges $\left(\text{=CH-}\right)$.