1 for specific request mail
Portage Biochemistry- Module 8 Questions and
Correct Answers | Latest Update
What is the "unifying" theory covered in this module? Ans:
Chemiosmotic theory
How many ATP are produced per NADH molecule? Per FADH2 molecule?
Ans: NADH- 2.5 ATP
FADH2- 1.5 ATP
In the figure below, several portions of a molecule have dashed circles.
Assignment Expert
Which portion of the molecule, A, B, C, or D, would be removed in
oxidative deamination? Briefly explain. Ans: Part D. This is the amine
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portion of the amino acid.
What happens to the carbon skeleton of an amino acid after it is
separated from NH4+? Ans: The carbon skeleton becomes acetyl-CoA,
2026
then ATP.
Why is urea such a good molecule for excreting nitrogen from cells? Ans:
©
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?
C. What is Pi?
D. Which two amino acids were studied in Module 3? Ans: A. 3 ATP
molecules, overall. 2 ATP from Reaction-A and 1 in Reaction-2.
B. Fumarate
C. Inorganic phosphate or inorganic orthophosphate.
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D. Aspartate and arginine were studied in Module 3.
What is an integral protein? Ans: A protein firmly embedded in the lipid
bilayer
How many complexes are in the ETC? Ans: Four complexes named
complex I, II, III, and IV
At which ETC complex is H2O produced? How is it produced? Ans: At
complex IV by the following reaction:
O2 + 4e- + 4H+ → 2H2O
Assignment Expert
What complex oxidizes NADH?
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How about FADH2? Ans: Complex I for NADH.
Complex II for FADH2.
At which complex is water produced from oxygen? Ans: Complex IV
2026
How is the H+ gradient formed? Ans: Complexes I, III, and IV pump these
ions from the matrix to the intermembrane space.
©
What is the purpose of FO and F1 in ATP synthase? Ans: FO contains the
pore through which H+ ions flow causing its rotation. The rotation of FO
causes F1 to catalyze the formation of ATP from ADP and Pi.
True or False: The majority of reactions of the urea cycle occur in the
mitochondrial matrix. Ans: False
True or False: NADH yields 2.5 ATP molecules after donating electrons
and hydrogen atoms to the electron transfer chain (ETC). Ans: True
True or False: ATP is invested in the urea cycle. Ans: True
True or False: There are four complexes associated with the ETC. Ans:
True
Portage Biochemistry- Module 8 Questions and
Correct Answers | Latest Update
What is the "unifying" theory covered in this module? Ans:
Chemiosmotic theory
How many ATP are produced per NADH molecule? Per FADH2 molecule?
Ans: NADH- 2.5 ATP
FADH2- 1.5 ATP
In the figure below, several portions of a molecule have dashed circles.
Assignment Expert
Which portion of the molecule, A, B, C, or D, would be removed in
oxidative deamination? Briefly explain. Ans: Part D. This is the amine
Guru01 - Stuvia
portion of the amino acid.
What happens to the carbon skeleton of an amino acid after it is
separated from NH4+? Ans: The carbon skeleton becomes acetyl-CoA,
2026
then ATP.
Why is urea such a good molecule for excreting nitrogen from cells? Ans:
©
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?
C. What is Pi?
D. Which two amino acids were studied in Module 3? Ans: A. 3 ATP
molecules, overall. 2 ATP from Reaction-A and 1 in Reaction-2.
B. Fumarate
C. Inorganic phosphate or inorganic orthophosphate.
, 2 for specific request mail
D. Aspartate and arginine were studied in Module 3.
What is an integral protein? Ans: A protein firmly embedded in the lipid
bilayer
How many complexes are in the ETC? Ans: Four complexes named
complex I, II, III, and IV
At which ETC complex is H2O produced? How is it produced? Ans: At
complex IV by the following reaction:
O2 + 4e- + 4H+ → 2H2O
Assignment Expert
What complex oxidizes NADH?
Guru01 - Stuvia
How about FADH2? Ans: Complex I for NADH.
Complex II for FADH2.
At which complex is water produced from oxygen? Ans: Complex IV
2026
How is the H+ gradient formed? Ans: Complexes I, III, and IV pump these
ions from the matrix to the intermembrane space.
©
What is the purpose of FO and F1 in ATP synthase? Ans: FO contains the
pore through which H+ ions flow causing its rotation. The rotation of FO
causes F1 to catalyze the formation of ATP from ADP and Pi.
True or False: The majority of reactions of the urea cycle occur in the
mitochondrial matrix. Ans: False
True or False: NADH yields 2.5 ATP molecules after donating electrons
and hydrogen atoms to the electron transfer chain (ETC). Ans: True
True or False: ATP is invested in the urea cycle. Ans: True
True or False: There are four complexes associated with the ETC. Ans:
True
