A test in which the sample turns blue-black in the presence of starch.

Made up of sub-units of fatty acids and used for structure and stored energy. Examples are fats, oils, and waxes.

A large molecule, made from joining together many small molecules.

The simplest unit, or the repeating unit of a large molecule.

A molecule that carries genetic information from the DNA to a ribosome, in order to make proteins.

made up of sub-units of nucleotides, part of the genetic material of the cell and needed to make proteins.

A polysaccharide carbohydrate consisting of a large number of glucose molecules.

Made up of amino acids and used by the body for growth, replacement, and repair of body cells.

The range of temperature and pH levels that an enzyme works best.