BioChem 210 Module 8 Exam - Portage Learning Latest 2025

BIOCHEM 210 MODULE 8 EXAM
1. True or False: The majority of reactions of the urea cycle occur in the cytosol.-
: true
2. True or False: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen
atoms to the electron transfer chain (ETC).: False
3. True or False: ATP is invested in the urea cycle.: True
4. True or False: There are five complexes associated with the ETC.: False
5. True or False: In the production of ATP via ATP synthase, the H+ ions move from the
mitochondrial matrix to the intermembrane space.: False
6. The urea cycle involves reactions (only those in the cyclic portion of the
process).




-4
-5
-6
-8
- 10: - 4
7. Which amino acids are involved in the urea cycle?




A. Ornithine B. Aspartate C. Threonine
D. Both A and B
E. Both A and C: D. Both A and B
8. Fumarate reenters the mitochondrion as which of the following molecules?




- Malate
- Ornithine

, - Citrulline
- Fumarase
- Ammonia: - Malate
9. Urea is useful for excreting nitrogen from cells due to its:
- Ability to hydrogen bond with water
- Ability to form ions
- Large size
- Low melting point
- None of these: - Ability to hydrogen bond with water
10. Which component of the urea cycle is also a member of the CAC?




- Fumarate
- Malate
- Acetyl-CoA
- Citrate
- None of the above: - Fumarate
11. Oxidative deamination results in the removal of from amino acids.




A. N2
B. NH4+ C. NO2
D. NH2
E. NH3: B. NH4+
12. The following chemical species is .: Urea
13. NADH donates electrons and H+ to complex .




I II III IV V: I
14. Which of the ETC complexes do pump H+ ions?