A review of structure and properties of atoms, ions and molecules; chemical change; saturated hydrocarbons - alkanes; unsaturated hydrocarbons - alkenes, alkynes and aromatics; alcohols, thiols and ethers; aldehydes and ketones; carbohydrates; carboxylic acids and carboxylic acid derivatives; lipids and their function in biochemical systems; amines and amides; protein conformation and function; enzyme catalysis; carbohydrate metabolism; metabolism and energy production; fatty acid metabolism; introduction to molecular genetics; nutrition appendices.