BIOC 385 Metabolic Biochemistry Exam 3 Review
Test Bank - 170 Latest Real Exam Questions with
Correct Detailed Answers / BIOC 385 Exam 3 Latest
2026-2027 University of Arizona/ Biochem 385 Exam 3
Which of the five symptoms listed below are associated with undiagnosed Type 2
diabetes?
Insomnia
Slow-healing sores
Black urine
Loss of smell
Sensitivity to light
Blurred vision
Increased thirst
Frequent urination
Obesity
Psychotic episodes
Slow-healing sores
Blurred vision
Increased thirst
Frequent urination
Obesity
,If HCO3- that is radioactively labeled with 13C is available, which carbon atom in
the molecule below would ultimately be expected to be radioactive?
A
C
D
B
C
Defects in nucleotide metabolism that lead to a buildup of uric acid cause the
disease gout. Select the TWO true statements below regarding potential treatments
for gout.
A) An inhibitor of xanthine oxidase, such as allopurinol, will limit the conversion
of hypoxanthine to uric acid, and could be effective in reducing uric acid levels.
B) If gout is caused by HGPRT deficiency, increasing the amount of guanine
available would shunt more hypoxanthine to GMP production, and could be
,effective in reducing uric acid levels.
C) If gout is caused by insensitivity of glutamine-PRPP amidotransferase to
feedback inhibition, raising the levels of 5-phosphoribosylamine could be effective
in reducing uric acid levels.
D) If gout is caused by increased levels of PRPP synthetase, increasing the activity
of other enzymes in the uric acid production pathway could be effective in
reducing uric acid levels.
E) Supplying humans with the enzyme urate oxidase theoretically could be
effective in reducing uric acid levels.
A) An inhibitor of xanthine oxidase, such as allopurinol, will limit the conversion
of hypoxanthine to uric acid, and could be effective in reducing uric acid levels.
E) Supplying humans with the enzyme urate oxidase theoretically could be
effective in reducing uric acid levels.
Name the two nucleotides shown below.
A. GMP (A) and dTDP (B)
B. ADP (A) and UDP (B)
C. GMP (A) and dUDP (B)
D. AMP (A) and dTDP (B)
E. AMP (A) and CDP (B)
A. GMP (A) and dTDP (B)
The conversion of ribose-1-phosphate to ATP via the salvage pathway would
require the activity of several enzymes. Choose the answer that lists them in the
order that they would act in this pathway.
A) phosphopentomutase; phosphoriboxyl transferase; kinase; PRPP synthetase;
kinase
B) PRPP synthetase; phosphopentomutase; kinase; kinase; phosphoriboxyl
, transferase
C) phosphopentomutase; PRPP synthetase; phosphoriboxyl transferase; kinase;
kinase
D) PRPP synthetase; phosphoriboxyl transferase; phosphopentomutase; kinase;
kinase
C) phosphopentomutase; PRPP synthetase; phosphoriboxyl transferase; kinase;
kinase
Which enzyme activity would be directly inhibited by the addition of
methotrexate?
thymidylate synthase
dihydrofolate reductase
thymidine kinase
serine hydroxymethyltransferase
dihydrofolate reductase
In the duodenum, enteropeptidase _______________.
A) cleaves chymotrypsinogen to form chymotrypsin
B) neutralizes the pH of the duodenum to a pH of 7
C) cleaves trypsinogen to form trypsin
D) generates peptides and amino acids
C) cleaves trypsinogen to form trypsin
Which of the three proteins in the ubiquination pathway is the most responsible for
recognizing the ubiquintated target protein?
E1
E2
E3
all three of the proteins recognize the target protein
E3
What is the regulatory mechanism by which arginine stimulates flux through the
urea cycle?
Test Bank - 170 Latest Real Exam Questions with
Correct Detailed Answers / BIOC 385 Exam 3 Latest
2026-2027 University of Arizona/ Biochem 385 Exam 3
Which of the five symptoms listed below are associated with undiagnosed Type 2
diabetes?
Insomnia
Slow-healing sores
Black urine
Loss of smell
Sensitivity to light
Blurred vision
Increased thirst
Frequent urination
Obesity
Psychotic episodes
Slow-healing sores
Blurred vision
Increased thirst
Frequent urination
Obesity
,If HCO3- that is radioactively labeled with 13C is available, which carbon atom in
the molecule below would ultimately be expected to be radioactive?
A
C
D
B
C
Defects in nucleotide metabolism that lead to a buildup of uric acid cause the
disease gout. Select the TWO true statements below regarding potential treatments
for gout.
A) An inhibitor of xanthine oxidase, such as allopurinol, will limit the conversion
of hypoxanthine to uric acid, and could be effective in reducing uric acid levels.
B) If gout is caused by HGPRT deficiency, increasing the amount of guanine
available would shunt more hypoxanthine to GMP production, and could be
,effective in reducing uric acid levels.
C) If gout is caused by insensitivity of glutamine-PRPP amidotransferase to
feedback inhibition, raising the levels of 5-phosphoribosylamine could be effective
in reducing uric acid levels.
D) If gout is caused by increased levels of PRPP synthetase, increasing the activity
of other enzymes in the uric acid production pathway could be effective in
reducing uric acid levels.
E) Supplying humans with the enzyme urate oxidase theoretically could be
effective in reducing uric acid levels.
A) An inhibitor of xanthine oxidase, such as allopurinol, will limit the conversion
of hypoxanthine to uric acid, and could be effective in reducing uric acid levels.
E) Supplying humans with the enzyme urate oxidase theoretically could be
effective in reducing uric acid levels.
Name the two nucleotides shown below.
A. GMP (A) and dTDP (B)
B. ADP (A) and UDP (B)
C. GMP (A) and dUDP (B)
D. AMP (A) and dTDP (B)
E. AMP (A) and CDP (B)
A. GMP (A) and dTDP (B)
The conversion of ribose-1-phosphate to ATP via the salvage pathway would
require the activity of several enzymes. Choose the answer that lists them in the
order that they would act in this pathway.
A) phosphopentomutase; phosphoriboxyl transferase; kinase; PRPP synthetase;
kinase
B) PRPP synthetase; phosphopentomutase; kinase; kinase; phosphoriboxyl
, transferase
C) phosphopentomutase; PRPP synthetase; phosphoriboxyl transferase; kinase;
kinase
D) PRPP synthetase; phosphoriboxyl transferase; phosphopentomutase; kinase;
kinase
C) phosphopentomutase; PRPP synthetase; phosphoriboxyl transferase; kinase;
kinase
Which enzyme activity would be directly inhibited by the addition of
methotrexate?
thymidylate synthase
dihydrofolate reductase
thymidine kinase
serine hydroxymethyltransferase
dihydrofolate reductase
In the duodenum, enteropeptidase _______________.
A) cleaves chymotrypsinogen to form chymotrypsin
B) neutralizes the pH of the duodenum to a pH of 7
C) cleaves trypsinogen to form trypsin
D) generates peptides and amino acids
C) cleaves trypsinogen to form trypsin
Which of the three proteins in the ubiquination pathway is the most responsible for
recognizing the ubiquintated target protein?
E1
E2
E3
all three of the proteins recognize the target protein
E3
What is the regulatory mechanism by which arginine stimulates flux through the
urea cycle?
