HUMAN NUTRITION

Detailed explanation-1: -Fatty acids consist of a long hydrocarbon chain (–CH2–CH2–) with a carboxyl group, typically at the terminus of the molecule. The hydrocarbon chain can be saturated or unsaturated (containing double bonds) depending on the origin of the fatty acid.

Detailed explanation-2: -A fat molecule consists of two kinds of parts: a glycerol backbone and three fatty acid tails. Glycerol is a small organic molecule with three hydroxyl (OH) groups, while a fatty acid consists of a long hydrocarbon chain attached to a carboxyl group.

Detailed explanation-3: -Carboxyl groups are commonly found in amino acids, fatty acids, and other biomolecules.

Detailed explanation-4: -A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.