catalyst
a substance that increased the rate of a chemical reaction and is not changed by the reaction
enzymes
proteins that are involved in all metabolic reactions where they function as biological catalysts
active site
the part of an enzyme molecule to which the substrate temporarily bonds
product
the new substance formed by a chemical reactions
enzyme-substrate complex
the short lived structure formed as the substrate binds temporarily to
specificity
only able to act on a particular substrate
buffer soolution
a liquid with a known pH to keep the pH steady