ENZYMES REVIEW PPT
What is a biological catalyst? Enzymes
What two things does a catalyst do? 1) a substance that speeds up a chemical rxn 2) lowers activation energy [meaning lowers heat]
What is a substance that enters into a chemical reaction? Reactants What is a substance that is produced by a chemical reaction? Products
What is the energy needed to start a chemical reaction? Activation energy
Graph of enzyme reaction with and without activation energy.
What goes into an enzyme-catalyzed reaction? Substrate
Where does the substrate join to the enzyme? Active site
What is a substance that slows or stops an enzyme reaction? Inhibitor
What happens if too much heat is added to proteins? Denaturation [ie. the protein unravels or unfolds]
What else can cause denaturation of enzymes? Change of pH or chemicals.