Biochem Module 8 Exam with accurate detailed ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answers
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T/F: The majority of the reactions of the urea cycle occur in the cytosol. - correct
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answer✔✔true
T/F: The majority of the reactions of the urea cycle occur in the mitochondrial matrix. -
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correct answer✔✔false ||\\//||
T/F: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms to the
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ETC. - correct answer✔✔false
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How many ATP molecules does NADH yield after donating electrons and hydrogen atoms to
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the electron transfer chain (ETC)? - correct answer✔✔2.5 ATP per NADH
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How many ATP molecules does FADH2 yield after donating electrons and hydrogen atoms to
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the electron transfer chain (ETC)? - correct answer✔✔1.5 ATP per FADH2
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T/F: ATP is invested in the urea cycle. - correct answer✔✔true
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How many total ATP are invested in the urea cycle? - correct answer✔✔3
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T/F: There are 5 complexes associated with the ETC. - correct answer✔✔false
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How many complexes are associated with the ETC? - correct answer✔✔4
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T/F: In the production of ATP via ATP synthase, the H+ ions move from the mitochondrial
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matrix to the intermembrane space. - correct answer✔✔false
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, T/F: In the production of ATP via ATP synthase, the H+ ions move from the intermembrane
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space to the mitochondrial matrix. - correct answer✔✔true
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The urea cycle involves ___ reactions (only those in the cyclic portion of the process). -
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correct answer✔✔4 ||\\//||
What amino acids are involved in the urea cycle? - correct answer✔✔ornithine, arginine, and
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aspartate
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Fumarate reenters the mitochondrion as - correct answer✔✔malate ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Urea is useful for excreting nitrogen from cells due to its - correct answer✔✔ability to
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hydrogen bonds with water and its high density of nitrogen in a small molecule ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Which component of the urea cycle is also a member of the CAC? - correct
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answer✔✔fumarate
Oxidative deamination results in the removal of ___ from amino acids. - correct ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answer✔✔NH4+ (amine group) ||\\//|| ||\\//||
What is the following chemical species? - correct answer✔✔urea
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What is the following chemical species? - correct answer✔✔ammonium (NH4+)
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What amino acid is the following structure? - correct answer✔✔aspartate
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What amino acid is the following structure? - correct answer✔✔arginine
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answers
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T/F: The majority of the reactions of the urea cycle occur in the cytosol. - correct
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answer✔✔true
T/F: The majority of the reactions of the urea cycle occur in the mitochondrial matrix. -
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correct answer✔✔false ||\\//||
T/F: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms to the
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ETC. - correct answer✔✔false
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How many ATP molecules does NADH yield after donating electrons and hydrogen atoms to
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the electron transfer chain (ETC)? - correct answer✔✔2.5 ATP per NADH
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How many ATP molecules does FADH2 yield after donating electrons and hydrogen atoms to
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the electron transfer chain (ETC)? - correct answer✔✔1.5 ATP per FADH2
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T/F: ATP is invested in the urea cycle. - correct answer✔✔true
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How many total ATP are invested in the urea cycle? - correct answer✔✔3
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T/F: There are 5 complexes associated with the ETC. - correct answer✔✔false
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How many complexes are associated with the ETC? - correct answer✔✔4
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T/F: In the production of ATP via ATP synthase, the H+ ions move from the mitochondrial
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matrix to the intermembrane space. - correct answer✔✔false
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, T/F: In the production of ATP via ATP synthase, the H+ ions move from the intermembrane
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space to the mitochondrial matrix. - correct answer✔✔true
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The urea cycle involves ___ reactions (only those in the cyclic portion of the process). -
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correct answer✔✔4 ||\\//||
What amino acids are involved in the urea cycle? - correct answer✔✔ornithine, arginine, and
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aspartate
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Fumarate reenters the mitochondrion as - correct answer✔✔malate ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Urea is useful for excreting nitrogen from cells due to its - correct answer✔✔ability to
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hydrogen bonds with water and its high density of nitrogen in a small molecule ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Which component of the urea cycle is also a member of the CAC? - correct
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answer✔✔fumarate
Oxidative deamination results in the removal of ___ from amino acids. - correct ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
answer✔✔NH4+ (amine group) ||\\//|| ||\\//||
What is the following chemical species? - correct answer✔✔urea
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What is the following chemical species? - correct answer✔✔ammonium (NH4+)
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What amino acid is the following structure? - correct answer✔✔aspartate
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What amino acid is the following structure? - correct answer✔✔arginine
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