Biochemiistry Chem 210 Module 8 Exam -Portage Learning| Actual Questions And Verified Answers | Graded A+ | Pass First Attempt | Brand New 2026 Up-Date!!!!!

True or False: The majority of reactions of the urea cycle occur in the cytosol. - ANSWER
true



True or False: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms
to the electron transfer chain (ETC). - ANSWER False



True or False: ATP is invested in the urea cycle. - ANSWER True



True or False: There are five complexes associated with the ETC. - ANSWER False



True or False: In the production of ATP via ATP synthase, the H+ ions move from the mito-
chondrial matrix to the intermembrane space. - ANSWER False



The urea cycle involves _________ reactions (only those in the cyclic portion of the process).



-4

-5

-6

-8

- 10 - ANSWER -4



Which amino acids are involved in the urea cycle?



A. Ornithine


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, B. Aspartate

C. Threonine

D. Both A and B

E. Both A and C - ANSWER D. Both A and B



Fumarate reenters the mitochondrion as which of the following molecules?



- Malate

- Ornithine

- Citrulline

- Fumarase

- Ammonia - ANSWER - Malate



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 - ANSWER - Ability to hydrogen bond with water



Which component of the urea cycle is also a member of the CAC?



- Fumarate

- Malate

- Acetyl-CoA

- Citrate



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