PCOL 838 ACTUAL TEST QUESTIONS WITH
COMPLETE ANSWER KEY
●● A BMI from 25 to under 30 kg/m2 is classified as what
Answer: Overweight. The lecture defines this interval as overweight or
pre-obese.
●● A BMI greater than 30 kg/m2 is classified as what
Answer: Obese. A BMI above 30 kg/m2 is classified as obese.
●● A bond connecting two amino acids is called a what
Answer: Peptide bond. An amide bond between amino acids is a peptide
bond.
●● A regular hexapeptide contains how many peptide bonds
Answer: 5. A linear peptide with six residues has five peptide bonds.
●● A tetrapeptide contains how many amino acid residues
Answer: 4. The prefix tetra- indicates four amino acid residues.
●● ACE inhibitors are primarily used to treat what
,Answer: Hypertension. ACE inhibitors are used primarily in
hypertension treatment.
●● Acetone forms nonenzymatically from which ketone body
Answer: Acetoacetate. Acetoacetate can decarboxylate nonenzymatically
to acetone.
●● Amino acids from muscle support which liver pathway in fasting
Answer: Gluconeogenesis. Muscle amino acids travel to the liver as
gluconeogenic precursors.
●● An alpha helix belongs to which level of protein structure
Answer: Secondary. Alpha helices are secondary-structure motifs.
●● Anandamide is best described as what
Answer: A fatty acid derivative. Anandamide is an endogenous
cannabinoid fatty acid derivative.
●● Arachidonic acid is a precursor for which signaling molecules
Answer: Prostaglandins. The lecture links arachidonic acid metabolism
to prostaglandins.
●● Aromatase converts which substrates into estrogens
, Answer: Androgens. Aromatase catalyzes androgen aromatization during
estrogen synthesis.
●● At about pH 7, an alpha-amino acid commonly exists as a what
Answer: Zwitterion. At physiological pH, the amino and carboxyl
groups carry opposite charges.
●● Beta sheets are formed from laterally connected what
Answer: Beta strands. Hydrogen-bonded beta strands form a pleated
beta sheet.
●● Carbidopa inhibits which drug target
Answer: DOPA decarboxylase. Carbidopa is a DOPA decarboxylase
inhibitor used in Parkinson therapy.
●● Collagen maturation includes hydroxylation of which residues
Answer: Lysine and proline. Collagen undergoes oxidative modification
of lysine and proline residues.
●● DOPA decarboxylase requires which vitamin-derived cofactor
Answer: Vitamin B6. The lecture labels these reactions as B6-dependent
decarboxylations.
COMPLETE ANSWER KEY
●● A BMI from 25 to under 30 kg/m2 is classified as what
Answer: Overweight. The lecture defines this interval as overweight or
pre-obese.
●● A BMI greater than 30 kg/m2 is classified as what
Answer: Obese. A BMI above 30 kg/m2 is classified as obese.
●● A bond connecting two amino acids is called a what
Answer: Peptide bond. An amide bond between amino acids is a peptide
bond.
●● A regular hexapeptide contains how many peptide bonds
Answer: 5. A linear peptide with six residues has five peptide bonds.
●● A tetrapeptide contains how many amino acid residues
Answer: 4. The prefix tetra- indicates four amino acid residues.
●● ACE inhibitors are primarily used to treat what
,Answer: Hypertension. ACE inhibitors are used primarily in
hypertension treatment.
●● Acetone forms nonenzymatically from which ketone body
Answer: Acetoacetate. Acetoacetate can decarboxylate nonenzymatically
to acetone.
●● Amino acids from muscle support which liver pathway in fasting
Answer: Gluconeogenesis. Muscle amino acids travel to the liver as
gluconeogenic precursors.
●● An alpha helix belongs to which level of protein structure
Answer: Secondary. Alpha helices are secondary-structure motifs.
●● Anandamide is best described as what
Answer: A fatty acid derivative. Anandamide is an endogenous
cannabinoid fatty acid derivative.
●● Arachidonic acid is a precursor for which signaling molecules
Answer: Prostaglandins. The lecture links arachidonic acid metabolism
to prostaglandins.
●● Aromatase converts which substrates into estrogens
, Answer: Androgens. Aromatase catalyzes androgen aromatization during
estrogen synthesis.
●● At about pH 7, an alpha-amino acid commonly exists as a what
Answer: Zwitterion. At physiological pH, the amino and carboxyl
groups carry opposite charges.
●● Beta sheets are formed from laterally connected what
Answer: Beta strands. Hydrogen-bonded beta strands form a pleated
beta sheet.
●● Carbidopa inhibits which drug target
Answer: DOPA decarboxylase. Carbidopa is a DOPA decarboxylase
inhibitor used in Parkinson therapy.
●● Collagen maturation includes hydroxylation of which residues
Answer: Lysine and proline. Collagen undergoes oxidative modification
of lysine and proline residues.
●● DOPA decarboxylase requires which vitamin-derived cofactor
Answer: Vitamin B6. The lecture labels these reactions as B6-dependent
decarboxylations.
