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LEHNINGER PRINCIPLES OF BIOCHEMISTRY-
CHAPTER 6 KEY TERMS 2026| COMPLETE
EXAM SET WITH ACTUAL QUESTIONS AND
VERIFIED ANSWERS
equilibrium constant (Kₑ) - correct-answer -A constant, characteristic for each
chemical reaction, that relates the specific concentrations of all reactants and
products at equilibrium at a given temperature and pressure.
rate constant - correct-answer -The proportionality constant that relates the
velocity of a chemical reaction to the concentration(s) of the reactant(s).
binding energy (ΔGᵦ) - correct-answer -The energy derived from noncovalent
interactions between enzyme and substrate or receptor and ligand.
specificity - correct-answer -The ability of an enzyme or receptor to discriminate
among competing substrates or ligands.
induced fit - correct-answer -A change in the conformation of an enzyme in
response to substrate binding that renders the enzyme catalytically active; also
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denotes changes in the conformation of any macromolecule in response to ligand
binding, such that the binding site better conforms to the shape of the ligand.
specific acid-base catalysis - correct-answer -Acid or base catalysis involving the
constituents of water (hydroxide or hydronium ions).
general acid-base catalysis - correct-answer -Catalysis involving proton transfer(s)
to or from a molecule other than water.
covalent catalysis - correct-answer -In this reaction the enzyme contains a reactive
group, usually a nucleophilic residue which reacts with the substrate through a
nucleophilic attack.
enzyme kinetics - correct-answer -The study of the chemical reactions that are
catalysed by enzymes; the reaction rate is measured and the effects of varying the
conditions of the reaction are investigated.
initial rate (initial velocity), V₀ - correct-answer -The instantaneous rate at the
start of the reaction (i.e., when t = 0).
LEHNINGER PRINCIPLES OF BIOCHEMISTRY-
CHAPTER 6 KEY TERMS 2026| COMPLETE
EXAM SET WITH ACTUAL QUESTIONS AND
VERIFIED ANSWERS
equilibrium constant (Kₑ) - correct-answer -A constant, characteristic for each
chemical reaction, that relates the specific concentrations of all reactants and
products at equilibrium at a given temperature and pressure.
rate constant - correct-answer -The proportionality constant that relates the
velocity of a chemical reaction to the concentration(s) of the reactant(s).
binding energy (ΔGᵦ) - correct-answer -The energy derived from noncovalent
interactions between enzyme and substrate or receptor and ligand.
specificity - correct-answer -The ability of an enzyme or receptor to discriminate
among competing substrates or ligands.
induced fit - correct-answer -A change in the conformation of an enzyme in
response to substrate binding that renders the enzyme catalytically active; also
, 2|Page
denotes changes in the conformation of any macromolecule in response to ligand
binding, such that the binding site better conforms to the shape of the ligand.
specific acid-base catalysis - correct-answer -Acid or base catalysis involving the
constituents of water (hydroxide or hydronium ions).
general acid-base catalysis - correct-answer -Catalysis involving proton transfer(s)
to or from a molecule other than water.
covalent catalysis - correct-answer -In this reaction the enzyme contains a reactive
group, usually a nucleophilic residue which reacts with the substrate through a
nucleophilic attack.
enzyme kinetics - correct-answer -The study of the chemical reactions that are
catalysed by enzymes; the reaction rate is measured and the effects of varying the
conditions of the reaction are investigated.
initial rate (initial velocity), V₀ - correct-answer -The instantaneous rate at the
start of the reaction (i.e., when t = 0).
