AP Bio Unit 3 Enzymes UPDATED ACTUAL
Exam Questions and CORRECT Answers
active site - CORRECT ANSWER - a region on an enzyme that binds to a protein or other
substance during a reaction.
Substrate - CORRECT ANSWER - reactant of an enzyme-catalyzed reaction
product - CORRECT ANSWER - A substance produced in a chemical reaction
catalyst - CORRECT ANSWER - substance that speeds up the rate of reaction but is not
consumed
Enzyme - CORRECT ANSWER - protein that acts as a biological catalyst
activation energy - CORRECT ANSWER - Energy needed to get a reaction started
allosteric - CORRECT ANSWER - A type of enzyme that changes its conformation and its
function in response to a modifier
competitive inhibition - CORRECT ANSWER - substance that resembles the normal substrate
competes with the substrate for the active site; slows rate
noncompetitive inhibitor - CORRECT ANSWER - A substance that reduces the activity of an
enzyme by binding to a location remote from the active site, changing its conformation so that it
no longer binds to the substrate.
denatured enzyme - CORRECT ANSWER - when active site loses its shape and therefore its
function
Exam Questions and CORRECT Answers
active site - CORRECT ANSWER - a region on an enzyme that binds to a protein or other
substance during a reaction.
Substrate - CORRECT ANSWER - reactant of an enzyme-catalyzed reaction
product - CORRECT ANSWER - A substance produced in a chemical reaction
catalyst - CORRECT ANSWER - substance that speeds up the rate of reaction but is not
consumed
Enzyme - CORRECT ANSWER - protein that acts as a biological catalyst
activation energy - CORRECT ANSWER - Energy needed to get a reaction started
allosteric - CORRECT ANSWER - A type of enzyme that changes its conformation and its
function in response to a modifier
competitive inhibition - CORRECT ANSWER - substance that resembles the normal substrate
competes with the substrate for the active site; slows rate
noncompetitive inhibitor - CORRECT ANSWER - A substance that reduces the activity of an
enzyme by binding to a location remote from the active site, changing its conformation so that it
no longer binds to the substrate.
denatured enzyme - CORRECT ANSWER - when active site loses its shape and therefore its
function
