Portage Biochemistry- Module 8 Q & As
(Verified Answers) 2026 Update
What is the "unifying" theory covered in this module? -
Correct Answers ✅Chemiosmotic theory
How many ATP are produced per NADH molecule? Per FADH2
molecule? - Correct Answers ✅NADH- 2.5 ATP
FADH2- 1.5 ATP
In the figure below, several portions of a molecule have
dashed circles. Which portion of the molecule, A, B, C, or D,
would be removed in oxidative deamination? Briefly explain. -
Correct Answers ✅Part D. This is the amine portion of the
amino acid.
What happens to the carbon skeleton of an amino acid after it
is separated from NH4+? - Correct Answers ✅The carbon
skeleton becomes acetyl-CoA, then ATP.
Why is urea such a good molecule for excreting nitrogen from
cells? - Correct Answers ✅It has a high density of nitrogen
in a small molecule, and it can form numerous hydrogen
bonds with water.
A. In the overall processing of NH4+, how many molecules of
ATP are invested?
B. What molecule from the urea cycle can enter the citric acid
cycle?
, Portage Biochemistry- Module 8 Q & As
(Verified Answers) 2026 Update
C. What is Pi?
D. Which two amino acids were studied in Module 3? -
Correct Answers ✅A. 3 ATP molecules, overall. 2 ATP from
Reaction-A and 1 in Reaction-2.
B. Fumarate
C. Inorganic phosphate or inorganic orthophosphate.
D. Aspartate and arginine were studied in Module 3.
What is an integral protein? - Correct Answers ✅A protein
firmly embedded in the lipid bilayer
How many complexes are in the ETC? - Correct Answers
✅Four complexes named complex I, II, III, and IV
At which ETC complex is H2O produced? How is it produced? -
Correct Answers ✅At complex IV by the following reaction:
O2 + 4e- + 4H+ → 2H2O
What complex oxidizes NADH?
How about FADH2? - Correct Answers ✅Complex I for
NADH.
Complex II for FADH2.
At which complex is water produced from oxygen? - Correct
Answers ✅Complex IV
(Verified Answers) 2026 Update
What is the "unifying" theory covered in this module? -
Correct Answers ✅Chemiosmotic theory
How many ATP are produced per NADH molecule? Per FADH2
molecule? - Correct Answers ✅NADH- 2.5 ATP
FADH2- 1.5 ATP
In the figure below, several portions of a molecule have
dashed circles. Which portion of the molecule, A, B, C, or D,
would be removed in oxidative deamination? Briefly explain. -
Correct Answers ✅Part D. This is the amine portion of the
amino acid.
What happens to the carbon skeleton of an amino acid after it
is separated from NH4+? - Correct Answers ✅The carbon
skeleton becomes acetyl-CoA, then ATP.
Why is urea such a good molecule for excreting nitrogen from
cells? - Correct Answers ✅It has a high density of nitrogen
in a small molecule, and it can form numerous hydrogen
bonds with water.
A. In the overall processing of NH4+, how many molecules of
ATP are invested?
B. What molecule from the urea cycle can enter the citric acid
cycle?
, Portage Biochemistry- Module 8 Q & As
(Verified Answers) 2026 Update
C. What is Pi?
D. Which two amino acids were studied in Module 3? -
Correct Answers ✅A. 3 ATP molecules, overall. 2 ATP from
Reaction-A and 1 in Reaction-2.
B. Fumarate
C. Inorganic phosphate or inorganic orthophosphate.
D. Aspartate and arginine were studied in Module 3.
What is an integral protein? - Correct Answers ✅A protein
firmly embedded in the lipid bilayer
How many complexes are in the ETC? - Correct Answers
✅Four complexes named complex I, II, III, and IV
At which ETC complex is H2O produced? How is it produced? -
Correct Answers ✅At complex IV by the following reaction:
O2 + 4e- + 4H+ → 2H2O
What complex oxidizes NADH?
How about FADH2? - Correct Answers ✅Complex I for
NADH.
Complex II for FADH2.
At which complex is water produced from oxygen? - Correct
Answers ✅Complex IV
