CHEM 210 Biochemistry Exam 8 – 2026–2027 – Complete Questions and Answers (A+ Grade)CHEM 210 Biochemistry Exam 8 – 2026–2027 – Complete Questions and Answers (A+ Grade)

chem 210 exam 8 questions and answers
2026\2027 A+ Grade

T/F the majority of reactions of the urea cycle occur in the cytosol
- correct answer true



T/F NADH yields 1.5 ATP molecules after donating electrons and hydrogen atoms to the electron
transport chain (ETC)
- correct answer false



T/F GTP is invested in the urea cycle
- correct answer false



T/F there are six complexes associated with the ETC
- correct answer false



T/F in the production of ATP via ATP synthase, the H+ ions move from the mitochondrial matrix to the
intermembrane space
- correct answer false



the urea cycle involves ____ reactions (only those in the cyclic portion of the process)

A. 1

B. 2

C. 3

D. 4

E. 5
- correct answer D. 4



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
- correct answer D. both A and B



fumarate is converted to ___ for it to reenter the mitochondrion

A. ornithine

B. citrulline

C. malate

D. fumarase

E. ammonia
- correct answer C. malate



urea is useful for excreting nitrogen from cells due to its:

A. ability to form london forces

B. high density of nitrogen atoms

C. large size

D. low melting point

E. both B and C
- correct answer B. high density of nitrogen atoms



____ is both a component of the urea cycle and the citric acid cycle

A. malate

B. acetyl-CoA

C. citrate

D. fumarate

E. none of the above
- correct answer D. fumarate