A review and properties of atoms, ions, and molecules; a review of chemical change; an introduction to organic chemistry - the saturated hydro carbons; the unsaturated hydrocarbons - alkenes, alkynes, and aromatics; alcohols, phenols, thiols and ethers; aldehydes and ketones; carbohydrates; carboxylic acids and acid derivatives; lipids and their functions in biochemical systems; amine and amides; protein structure and function; enzymes; carbohydrate metabolism; aerobic respiration and energy production; fatty acid metabolism; introduction to molecular genetics.