©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
Bioc 3021 Exam 2 Questions And Answers
(Guaranteed A+)
Maltose and glycogen - answer✔Alpha-1-4-linkages are present in:
chair and boat forms - answer✔What is an example of a conformational difference?
acetal - answer✔The O-glycosidic bond linking two monosaccharide units is the equivalent to
the bond found in a/an:
polyisoprenoids - answer✔Which of the following classes of lipids include some of the lipid
soluble vitamins?
they are saturated - answer✔Which of the following is NOT true about trans fatty acids?
prostaglandin - answer✔What family of lipids has their synthesis is inhibited by NSAIDS?
the base component can be degraded to produce energy in catabolic reactions - answer✔What
is NOT a normal function of nucleic acids and nucleotides?
The bases are covalently bonded to the phosphates. - answer✔What is not true about DNA
double helix?
hydrogen bonding - answer✔Base pairing in DNA involves ___________ between purine and
pyrimidine bases.
Competitive Inhibitors - answer✔VMAX not affected,
KM Increased
Noncompetitive - answer✔VMAX goes down
KM isn't affected
half vmax - answer✔If the substrate concentration [S] is equal to the Km of an enzyme, the
reaction rate is:
1|Page
, ©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
Transition state intermediate and enzyme - answer✔Which pair is though to have the tightest
binding/association during enzyme catalysis?
Histidine - answer✔In the catalytic triad of chymotrypsin, which amino acid R-group is the
closest to the catalytic serine residue?
acyl enzyme intermediate - answer✔What is the name of the relatively stable covalent
intermediate in the chymotrypsin reaction?
Increase substrate concentration to very high levels - answer✔How can Vmax be approached
despite the presence of a competitive inhibitor?
The initial reaction velocity nearly doubles - answer✔For an enzyme with a Km of 10 uM, how
does the initial reaction velocity change if the substrate level is raised from 1 uM to 2 uM?
Km remains the same - answer✔If enzyme concentration doubles, how is Km affected?
Add moderate amount of a competitive inhibitor - answer✔If an enzyme reaction rate is
approaching the Vmax, with a large excess of substrate present, what would have the least
effect on the rate of reaction?
Both can be reversible - answer✔What is TRUE about competitive and non-competitive
inhibitors?
low affinity for substrate and require high amounts of substrate to reach Vmax -
answer✔Which of the following is true for an enzyme with a high Km?
Cysteine - answer✔Iodoacetamide inactivates enzymes by covalently modifying the R-group of:
Half are active and half are inactive - answer✔If an enzyme is operating at very high substrate
levels, and an irreversible site specific inhibitor is added, so that the reaction rate is reduced by
50%, what is TRUE about the resulting condition of the enzyme and/or substrate?
Initial velocity increases - answer✔Which of the following is true for catalysis of a reaction by
an enzyme?
linear - answer✔At very low substrate levels, the rate increases in a _______ manner.
False - answer✔True or false: irreversible inhibitors can be removed by dialysis
Albumin - answer✔The protein fraction present in the highest amount in blood serum which
acts as a carrier of fatty acids.
2|Page
ALL RIGHTS RESERVED.
Bioc 3021 Exam 2 Questions And Answers
(Guaranteed A+)
Maltose and glycogen - answer✔Alpha-1-4-linkages are present in:
chair and boat forms - answer✔What is an example of a conformational difference?
acetal - answer✔The O-glycosidic bond linking two monosaccharide units is the equivalent to
the bond found in a/an:
polyisoprenoids - answer✔Which of the following classes of lipids include some of the lipid
soluble vitamins?
they are saturated - answer✔Which of the following is NOT true about trans fatty acids?
prostaglandin - answer✔What family of lipids has their synthesis is inhibited by NSAIDS?
the base component can be degraded to produce energy in catabolic reactions - answer✔What
is NOT a normal function of nucleic acids and nucleotides?
The bases are covalently bonded to the phosphates. - answer✔What is not true about DNA
double helix?
hydrogen bonding - answer✔Base pairing in DNA involves ___________ between purine and
pyrimidine bases.
Competitive Inhibitors - answer✔VMAX not affected,
KM Increased
Noncompetitive - answer✔VMAX goes down
KM isn't affected
half vmax - answer✔If the substrate concentration [S] is equal to the Km of an enzyme, the
reaction rate is:
1|Page
, ©FYNDLAY EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
Transition state intermediate and enzyme - answer✔Which pair is though to have the tightest
binding/association during enzyme catalysis?
Histidine - answer✔In the catalytic triad of chymotrypsin, which amino acid R-group is the
closest to the catalytic serine residue?
acyl enzyme intermediate - answer✔What is the name of the relatively stable covalent
intermediate in the chymotrypsin reaction?
Increase substrate concentration to very high levels - answer✔How can Vmax be approached
despite the presence of a competitive inhibitor?
The initial reaction velocity nearly doubles - answer✔For an enzyme with a Km of 10 uM, how
does the initial reaction velocity change if the substrate level is raised from 1 uM to 2 uM?
Km remains the same - answer✔If enzyme concentration doubles, how is Km affected?
Add moderate amount of a competitive inhibitor - answer✔If an enzyme reaction rate is
approaching the Vmax, with a large excess of substrate present, what would have the least
effect on the rate of reaction?
Both can be reversible - answer✔What is TRUE about competitive and non-competitive
inhibitors?
low affinity for substrate and require high amounts of substrate to reach Vmax -
answer✔Which of the following is true for an enzyme with a high Km?
Cysteine - answer✔Iodoacetamide inactivates enzymes by covalently modifying the R-group of:
Half are active and half are inactive - answer✔If an enzyme is operating at very high substrate
levels, and an irreversible site specific inhibitor is added, so that the reaction rate is reduced by
50%, what is TRUE about the resulting condition of the enzyme and/or substrate?
Initial velocity increases - answer✔Which of the following is true for catalysis of a reaction by
an enzyme?
linear - answer✔At very low substrate levels, the rate increases in a _______ manner.
False - answer✔True or false: irreversible inhibitors can be removed by dialysis
Albumin - answer✔The protein fraction present in the highest amount in blood serum which
acts as a carrier of fatty acids.
2|Page
