organic compound
a covalently bonded compound that contains carbon
hydrocarbon
an organic compound composed only of carbon and hydrogen
carbohydrate
a class of energy-giving nutrients that includes sugars, starches, and fiber; composed of one or more simple sugars bonded together
lipid
a type of biochemical that does not dissolve in water; fats and steroids are lipids
protein
a molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes in the body
nucleic acid
a molecule made up of subunits called nucleotides