verified questions and answers 2025\2026
A+ Grade
What is the "unifying" theory covered in this module?
- correct answer Chemiosmotic theory
How many ATP are produced per NADH molecule? Per FADH2 molecule?
- correct answer 2.5 ATP produced per NADH; 1.5 ATP produced per FADH2
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 answer Part D. The amine portion of the amino acid is removed in oxidative deamination.
What happens to the carbon skeleton of an amino acid after it is separated from NH4+?
- correct answer The carbon skeleton becomes acetyl-CoA, then ATP.
Why is urea such a good molecule for excreting nitrogen from cells?
- correct answer It has a high density of nitrogen in a small molecule, and it can form numerous
hydrogen bonds with water.
Given the urea cycle below:
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?
- correct answer A. 3 ATP molecules total. (2 ATP from Reaction-A and 1 in Reaction-2)