Enzymes

Enzymes are proteins that control the rate of reaction

They lower activation energy

Characteristics of enzyme-controlled chemical reactions

The enzyme is unchanged after the reaction

Enzymes have high specificity

The active site of the enzyme binds to the substrate

Enzymes often are aided by coenzymes

Enzyme competition in cells is affected by:

temperature

pH

relative numbers of enzyme molecules

enzyme inhibitor molecules

GENES CODE FOR ENZYMES