BIOCHEM MODULE 8 EXAM
QUESTIONS AND ANSWERS 2026
VERIFIED.
True - ANS T/F: The majority of the reactions of the urea cycle occur in the cytosol.
false - ANS T/F: The majority of the reactions of the urea cycle occur in the mitochondrial
matrix.
false - ANS T/F: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms
to the ETC.
2.5 ATP per NADH - ANS How many ATP molecules does NADH yield after donating electrons
and hydrogen atoms to the electron transfer chain (ETC)?
1.5 ATP per FADH2 - ANS How many ATP molecules does FADH2 yield after donating
electrons and hydrogen atoms to the electron transfer chain (ETC)?
true - ANS T/F: ATP is invested in the urea cycle.
3 - ANS How many total ATP are invested in the urea cycle?
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, false - ANS T/F: There are 5 complexes associated with the ETC.
4 - ANS How many complexes are associated with the ETC?
false - ANS T/F: In the production of ATP via ATP synthase, the H+ ions move from the
mitochondrial matrix to the intermembrane space.
true - ANS T/F: In the production of ATP via ATP synthase, the H+ ions move from the
intermembrane space to the mitochondrial matrix.
4 - ANS The urea cycle involves ___ reactions (only those in the cyclic portion of the process).
ornithine, arginine, and aspartate - ANS What amino acids are involved in the urea cycle?
malate - ANS Fumarate reenters the mitochondrion as
ability to hydrogen bonds with water and its high density of nitrogen in a small molecule -
ANS Urea is useful for excreting nitrogen from cells due to its
fumarate - ANS Which component of the urea cycle is also a member of the CAC?
NH4+ (amine group) - ANS Oxidative deamination results in the removal of ___ from amino
acids.
urea - ANS What is the following chemical species?
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QUESTIONS AND ANSWERS 2026
VERIFIED.
True - ANS T/F: The majority of the reactions of the urea cycle occur in the cytosol.
false - ANS T/F: The majority of the reactions of the urea cycle occur in the mitochondrial
matrix.
false - ANS T/F: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms
to the ETC.
2.5 ATP per NADH - ANS How many ATP molecules does NADH yield after donating electrons
and hydrogen atoms to the electron transfer chain (ETC)?
1.5 ATP per FADH2 - ANS How many ATP molecules does FADH2 yield after donating
electrons and hydrogen atoms to the electron transfer chain (ETC)?
true - ANS T/F: ATP is invested in the urea cycle.
3 - ANS How many total ATP are invested in the urea cycle?
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 6
, false - ANS T/F: There are 5 complexes associated with the ETC.
4 - ANS How many complexes are associated with the ETC?
false - ANS T/F: In the production of ATP via ATP synthase, the H+ ions move from the
mitochondrial matrix to the intermembrane space.
true - ANS T/F: In the production of ATP via ATP synthase, the H+ ions move from the
intermembrane space to the mitochondrial matrix.
4 - ANS The urea cycle involves ___ reactions (only those in the cyclic portion of the process).
ornithine, arginine, and aspartate - ANS What amino acids are involved in the urea cycle?
malate - ANS Fumarate reenters the mitochondrion as
ability to hydrogen bonds with water and its high density of nitrogen in a small molecule -
ANS Urea is useful for excreting nitrogen from cells due to its
fumarate - ANS Which component of the urea cycle is also a member of the CAC?
NH4+ (amine group) - ANS Oxidative deamination results in the removal of ___ from amino
acids.
urea - ANS What is the following chemical species?
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 6
