Pre AP Biology Chapter 2 Prentice Hall

Process that changes one set of chemicals into another chemical iron changes to rust, physically changes the element

When electrons are shared between atoms

organic compound found in living things composed of an amino acid chain. Contains carbon, hydrogen, oxygen and nitrogen

Organic compound found in living things compound made up of carbon hydrogen and oxygen atoms

Protein that acts as a biological catalyst.

Substance that causes or speeds up the rate of a chemical reaction

The substance that is being dissolved

Basic unit of matter

Substance consisting entirely of one type of atom

Atom of an element that has a number of neutrons different from atoms of the same element

Organic compound found in living things fats, oils, and waxes used to store energy and waterproof coverings macromolecule made from carbon and hydrogen

Reactant of an enzyme catalized reaction

Substates bind to a site on the enzyme called active site, it has a complementary shape to substate, it fits like a lock and key. reacts with reactant. Once the reaction is over, the enzyme is free to start the reaction again.

Substance formed by a chemical combination of two or more elements in definite proportions NaCl

Small unit that can join together to form polymers, formed by the process of polymerization