Class of molecules

Typical structure

Carbohydrates

Basic Unit: monosaccharide

Complex forms: Disaccharides, starches, glygogen

Lipids

Basic unit: fatty acids

Complex forms: fats, oils, steroids

Proteins

Basic unit: Amino acid

Complex forms: polypeptides, proteins

Nucleic Acids

Basic Unit: nucleotides

Complex forms, DNA, RNA