Chapter 19, Problem 42RE

Interpretation Introduction

Interpretation:

The numbers of ATP molecules that are produced during the metabolism of one molecule of lactose during the citric acid cycle and glycolysis are to be calculated.

Concept introduction:

 Aerobic respiration is a metabolic process that takes place in excess amount of oxygen. The citric acid cycle is an important part of aerobic respiration that takes place inside the mitochondria.

 Glycolysis is a metabolic process in which a molecule of glucose is converted to two molecules of pyruvate. Glycolysis takes place in the cytoplasm of the cell.

 A hexose sugar is a sugar that contains six carbon atoms in its structure. For example, galactose and glucose. A disaccharide sugar is an organic molecule that yields two monosaccharides upon hydrolysis. For example, lactose sugar.