Chapter 26, Problem 82P

(a)

Interpretation Introduction

Interpretation: The number of decarboxylation reactions in the citric acid cycle should be determined.

Concept Introduction: Aerobic respiration occurs in two steps;

• Glycolysis
• Citric acid cycle

Glycolysis is the first step that forms pyruvate. In the presence of oxygen means aerobic respiration, this pyruvate enters in the Krebs cycle and extracts energy in the form of electrons transfer. Electrons are transferred from the pyruvate to the receptors like ${\text{NAD}}^{\text{+}}{\text{, GDP, and FAD and CO}}_{\text{2}}$ gas is formed as the waste product. The products of citric acid cycles act as precursors for electron transport chains.

(b)

Interpretation Introduction

Interpretation: The concurrent oxidizing agent in the decarboxylation steps in the citric acid cycle should be determined.

Concept Introduction: Aerobic respiration occurs in two steps;

• Glycolysis
• Citric acid cycle

Glycolysis is the first step that forms pyruvate. In the presence of oxygen means aerobic respiration, this pyruvate enters in the Krebs cycle and extracts energy in the form of electrons transfer. Electrons are transferred from the pyruvate to the receptors like ${\text{NAD}}^{\text{+}}{\text{, GDP, and FAD and CO}}_{\text{2}}$ gas is formed as the waste product. The products of citric acid cycles act as precursors for electron transport chains.