AP Biology: Unit 3 (Enzymes) UPDATED
ACTUAL Exam Questions and CORRECT
Answers
catalyst - CORRECT ANSWER - speeds up reaction by lowering activation energy/increasing
rate, does NOT cause reactions
enzymes - CORRECT ANSWER - proteins that act as biological catalysts, does not change in
chemical reaction
Ribozymes - CORRECT ANSWER - RNA molecules that function as enzymes
reactants - CORRECT ANSWER - substrate, binds to active site
Energy Barrier/ Transition state - CORRECT ANSWER - activation energy, energy needed to
start a reaction
enzyme-substrate complex - CORRECT ANSWER - when a substrate binds to the active site
of an enzyme
inducing strain - CORRECT ANSWER - enzyme stretches substrate causing it to go into
transition state
substrate orientation - CORRECT ANSWER - enzymes bring specific atoms to create bonds
to lower activation energy
adding chemical groups - CORRECT ANSWER - R-groups (amino acids) are added to break
covalent bonds on the substrate
ACTUAL Exam Questions and CORRECT
Answers
catalyst - CORRECT ANSWER - speeds up reaction by lowering activation energy/increasing
rate, does NOT cause reactions
enzymes - CORRECT ANSWER - proteins that act as biological catalysts, does not change in
chemical reaction
Ribozymes - CORRECT ANSWER - RNA molecules that function as enzymes
reactants - CORRECT ANSWER - substrate, binds to active site
Energy Barrier/ Transition state - CORRECT ANSWER - activation energy, energy needed to
start a reaction
enzyme-substrate complex - CORRECT ANSWER - when a substrate binds to the active site
of an enzyme
inducing strain - CORRECT ANSWER - enzyme stretches substrate causing it to go into
transition state
substrate orientation - CORRECT ANSWER - enzymes bring specific atoms to create bonds
to lower activation energy
adding chemical groups - CORRECT ANSWER - R-groups (amino acids) are added to break
covalent bonds on the substrate
