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AP BIOLOGY - UNIT 3 ACTUAL EXAM
QUESTIONS WITH VERIFIED SOLUTIONS
free energy:-correct-answer-Measures the portion of a system's energy that can
perform work when temperature and pressure are uniform throughout the
system, as in a living cell.
endergonic reaction:-correct-answer-Reaction that absorbs free energy from its
surroundings.
exergonic reaction:-correct-answer-Reaction that proceeds with a net release of
free energy.
catalyst:-correct-answer-A chemical agent that speeds up a reaction without being
consumed by the reaction.
enzyme:-correct-answer-Protein that speeds up reactions. Typically end in "ase"
(ex. Peroxidase, Lipase)
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activation energy:-correct-answer-The amount of energy needed to push the
reactants over an energy barrier.
enzyme-substrate complex:-correct-answer-When an enzyme binds to its
substrate, it forms:
active site:-correct-answer-A pocket or groove on the surface of the enzyme
where a substrate can bind.
induced fit model:-correct-answer-States that the enzyme and substrate undergo
conformational changes to interact fully with one another (as opposed to "Lock &
Key"
competitive inhibitors:-correct-answer-Reduce the productivity of enzymes by
blocking substrates from entering active sites.
noncompetitive inhibitors:-correct-answer-Impede enzymatic reactions by binding
to another part of the enzyme (other than the active site).
AP BIOLOGY - UNIT 3 ACTUAL EXAM
QUESTIONS WITH VERIFIED SOLUTIONS
free energy:-correct-answer-Measures the portion of a system's energy that can
perform work when temperature and pressure are uniform throughout the
system, as in a living cell.
endergonic reaction:-correct-answer-Reaction that absorbs free energy from its
surroundings.
exergonic reaction:-correct-answer-Reaction that proceeds with a net release of
free energy.
catalyst:-correct-answer-A chemical agent that speeds up a reaction without being
consumed by the reaction.
enzyme:-correct-answer-Protein that speeds up reactions. Typically end in "ase"
(ex. Peroxidase, Lipase)
, 2|Page
activation energy:-correct-answer-The amount of energy needed to push the
reactants over an energy barrier.
enzyme-substrate complex:-correct-answer-When an enzyme binds to its
substrate, it forms:
active site:-correct-answer-A pocket or groove on the surface of the enzyme
where a substrate can bind.
induced fit model:-correct-answer-States that the enzyme and substrate undergo
conformational changes to interact fully with one another (as opposed to "Lock &
Key"
competitive inhibitors:-correct-answer-Reduce the productivity of enzymes by
blocking substrates from entering active sites.
noncompetitive inhibitors:-correct-answer-Impede enzymatic reactions by binding
to another part of the enzyme (other than the active site).
