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BCH 451 Final Exam ACTUAL Questions and CORRECT Answers
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BCH 451 Final Exam ACTUAL Questions and CORRECT Answers van der waals interaction - CORRECT ANSWER- The () describes the relation between inter atomic distances, electronic charge, solution dielectric and free energy. Quaternary structure - CORRECT ANSWER- Protein () defines the relation amon...

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  • November 12, 2024
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BCH 451 Final Exam ACTUAL Questions
and CORRECT Answers
van der waals interaction - CORRECT ANSWER- ✔✔The () describes the relation between
inter atomic distances, electronic charge, solution dielectric and free energy.


Quaternary structure - CORRECT ANSWER- ✔✔Protein () defines the relation among
subunits in a multisubunit lattice


primary structure - CORRECT ANSWER- ✔✔Protein () defines the amino acid sequence



tertiary structure - CORRECT ANSWER- ✔✔Protein () defines the packing of helices,
sheets, turns, etc.


secondary structure - CORRECT ANSWER- ✔✔Protein () defines the motifs formed by
short-range interactions between amino acids


hydrogen bond - CORRECT ANSWER- ✔✔A () interaction involves polar O, N or both and
the atom for which it is named, and constitutes one of the important protein stabilization
elements.


beta-sheet - CORRECT ANSWER- ✔✔Name the following protein structure:



Edman degradation - CORRECT ANSWER- ✔✔() is used to determine the sequence of a
protein based on sequential chemical reactivity


chaotropic - CORRECT ANSWER- ✔✔A () agent induces denaturation of proteins by
disturbing the hydrophobic effect.


alpha helix - CORRECT ANSWER- ✔✔Name the following protein structure:



disulfide bond - CORRECT ANSWER- ✔✔Name the following protein structure:

,Ramachandran plot - CORRECT ANSWER- ✔✔A () is a graph of the conformational torsion
angles phi and psi for the residues in a protein or peptide, a mal of the structure of the
polypeptide backbone.


zwitterion - CORRECT ANSWER- ✔✔A () has two charges which neutralize each other



hydrophobic effect - CORRECT ANSWER- ✔✔The () is the primary "force" of protein
structural stabilization


initial rate - CORRECT ANSWER- ✔✔The () is the characteristic speed of an enzyme's
kinetic extrapolated to the time when a defined amount of substrate is added to the enzyme
solution.


catalysis - CORRECT ANSWER- ✔✔An act of () does not change enzyme and lowers the
transition state free energy of the associated reaction


maximum velocity - CORRECT ANSWER- ✔✔The () of an enzymatic catalysis reaction is
the rate achieved when it is saturated with substrate.


Lineweaver-Burk - CORRECT ANSWER- ✔✔The () (or double reciprocal) equation defines
parameters that are used to characterize the kinetics of an enzyme


Km - CORRECT ANSWER- ✔✔() is the substrate concentration when Vo = Vmax/2, or
Michaelis-Menten constant


Michaelis complex - CORRECT ANSWER- ✔✔A () is the enzyme-substrate combination
formed during an enzyme catalysis event


catalytic rate constant - CORRECT ANSWER- ✔✔The () of an enzyme is abbreviated as
kcat.

, competitive inhibition - CORRECT ANSWER- ✔✔() of enzyme catalysis occurs when an
inhibitor binds to the active site of the enzyme


uncompetitive inhibition - CORRECT ANSWER- ✔✔() of enzyme catalysis occurs when the
inhibitor only binds to the enzyme substrate complex


steady state - CORRECT ANSWER- ✔✔The () approximation postulates that a constant
input feed of substrate is supplied whose rate equals that of product formation


hydrophobic effect, H-bonding, disulfide bonds, van der Waals forces, ionic bonds or dipole-
dipole interactions - CORRECT ANSWER- ✔✔Two internal factors that limit the velocity of
an enzymatic reaction are () and ()


pH, solvent polarity, temperature, salt concentration and types, presence of chaotropes,
osmolytes - CORRECT ANSWER- ✔✔Two external factors that limit the velocity of an
enzymatic reaction are () and ()


serine, hydroxylate - CORRECT ANSWER- ✔✔What amino acid and functional group in the
esterase site of acetylcholine esterase reacts with the substrate?


Pydridine aldoximine methiodide - CORRECT ANSWER- ✔✔() (PAM) reactivates
acetylcholine esterase, functioning as a nerve gas antidote


nucleophilic substitution - CORRECT ANSWER- ✔✔What kind of reaction produces the
reactivated enzyme?


bisubstrate-enzyme - CORRECT ANSWER- ✔✔The () ping-pong reaction is used by
transaminases in the exchange of an amino group for a carbonyl group between two
progressively binding substrates


enzyme cascade - CORRECT ANSWER- ✔✔An () works by amplifying an initial signal via
several linked protease cleavage reaction states (eg blood clotting

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