The Breakdown of Fatty Acids: Fatty acids are broken down in the mitochondria through a process called beta-oxidation, generating acetyl-CoA, which enters the citric acid cycle to produce ATP for cellular energy.
Carbon Digestion: Carbohydrate digestion starts in the mouth with salivary amylase and continues in the small intestine with pancreatic enzymes, breaking polysaccharides into monosaccharides like glucose for absorption.