Period 1 AP Bio
Activity energy- amount of energy necessary to push reactants over and energy barrier
Enzyme speed reactions by lowering E(a)
Enzymes do not change delta G
-hastens reactions that would occur eventually
- b/c enzymes are so selective, they determine which chemical processe will occur at any time
Substrate- a reactant which binds to an enzyme
-when a substrate(s) binds to an enzyme catalses the conversion of the substrate to the product
Active site- of an enzymes is typically a pocket or groove on the surface of the protein into which the substrate fits
-induced fit- when the enzyme comes more together and conforms creating a much better fit
~ in most cases substrates are held together in the active site by weak interactions, such as hydrogen bonds and ionic bonds
**in the essay can use diagrams of enzymes on the TEST** (wont get extra points if you already explain it in the essay)
A single enzyme molecule can catalyze thouseands or more reactions a second
- enzymes are unaffected by the reaction and are reusable
-- Most metabolic enzymes can catalyze a reaction in both the forward and recerse direction
**********TEST ON WEDNESDAY**********