PORTAGE CHEM 210 BIOCHEMISTRY MODULE 8 FINAL EXAM QUESTIONS & ANSWERS 2026-2027 | ULTIMATE … EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Portage CHEM 210 Biochemistry
Module 8 Final Exam Questions &
Answers 2026-2027 | Ultimate Review
Guide | Verified Practice Test
(Rationales)
Verified Answers Exam Ready With Rationales
46 QUESTIONS
DOCUMENT OVERVIEW
This document contains 46 verified questions along with correct answers and detailed rationales focused
on biochemistry topics. It provides a comprehensive review of key concepts relevant to the subject area of
metabolic pathways and cellular respiration. Students can utilize this resource for effective study, review,
and preparation for certification exams, ensuring a solid understanding of essential biochemistry principles.
CONTENTS
01 Basic True/False Q1–Q9
02 ATP Production Q10–Q17
03 Amino Acids and Urea Cycle Q18–Q25
04 Electron Transport Chain Q26–Q34
05 Mitochondrial Function Q35–Q42
06 Citric Acid Cycle Q43–Q46
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 46
Page 1
, true
CORRECT ANSWER
T/F: The majority of the reactions of the urea cycle occur in the cytosol.
RATIONALE
Most urea cycle reactions take place in the mitochondria, with only the conversion of citrulline to argininosuccinate occurring in the cytosol, highlighting the
compartmentalization of metabolic pathways in cellular biology. Understanding this spatial organization is key to grasping nitrogen metabolism and its
regulation.
Q2 QUESTION 2 OF 46
false
CORRECT ANSWER
T/F: The majority of the reactions of the urea cycle occur in the mitochondrial matrix.
RATIONALE
Most urea cycle reactions take place in the mitochondrial matrix, where key enzymes like carbamoyl phosphate synthetase I and ornithine transcarbamylase
catalyze the initial steps, emphasizing the cycle's reliance on mitochondrial processes for ammonia detoxification and urea synthesis. This principle highlights
the compartmentalization of metabolic pathways in cellular biochemistry.
Q3 QUESTION 3 OF 46
false
CORRECT ANSWER
T/F: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms to the ETC.
RATIONALE
5 ATP. This highlights the differing contributions of NADH and FADH2 to ATP synthesis in cellular respiration.
Q4 QUESTION 4 OF 46
true
CORRECT ANSWER
T/F: ATP is invested in the urea cycle.
RATIONALE
ATP is indeed invested in the urea cycle, specifically during the conversion of ammonia to carbamoyl phosphate, which is catalyzed by carbamoyl phosphate
synthetase I. This investment is critical for the detoxification of ammonia and the synthesis of urea, reflecting the cycle's role in nitrogen metabolism.
Q5 QUESTION 5 OF 46
Page 2
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Portage CHEM 210 Biochemistry
Module 8 Final Exam Questions &
Answers 2026-2027 | Ultimate Review
Guide | Verified Practice Test
(Rationales)
Verified Answers Exam Ready With Rationales
46 QUESTIONS
DOCUMENT OVERVIEW
This document contains 46 verified questions along with correct answers and detailed rationales focused
on biochemistry topics. It provides a comprehensive review of key concepts relevant to the subject area of
metabolic pathways and cellular respiration. Students can utilize this resource for effective study, review,
and preparation for certification exams, ensuring a solid understanding of essential biochemistry principles.
CONTENTS
01 Basic True/False Q1–Q9
02 ATP Production Q10–Q17
03 Amino Acids and Urea Cycle Q18–Q25
04 Electron Transport Chain Q26–Q34
05 Mitochondrial Function Q35–Q42
06 Citric Acid Cycle Q43–Q46
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 46
Page 1
, true
CORRECT ANSWER
T/F: The majority of the reactions of the urea cycle occur in the cytosol.
RATIONALE
Most urea cycle reactions take place in the mitochondria, with only the conversion of citrulline to argininosuccinate occurring in the cytosol, highlighting the
compartmentalization of metabolic pathways in cellular biology. Understanding this spatial organization is key to grasping nitrogen metabolism and its
regulation.
Q2 QUESTION 2 OF 46
false
CORRECT ANSWER
T/F: The majority of the reactions of the urea cycle occur in the mitochondrial matrix.
RATIONALE
Most urea cycle reactions take place in the mitochondrial matrix, where key enzymes like carbamoyl phosphate synthetase I and ornithine transcarbamylase
catalyze the initial steps, emphasizing the cycle's reliance on mitochondrial processes for ammonia detoxification and urea synthesis. This principle highlights
the compartmentalization of metabolic pathways in cellular biochemistry.
Q3 QUESTION 3 OF 46
false
CORRECT ANSWER
T/F: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms to the ETC.
RATIONALE
5 ATP. This highlights the differing contributions of NADH and FADH2 to ATP synthesis in cellular respiration.
Q4 QUESTION 4 OF 46
true
CORRECT ANSWER
T/F: ATP is invested in the urea cycle.
RATIONALE
ATP is indeed invested in the urea cycle, specifically during the conversion of ammonia to carbamoyl phosphate, which is catalyzed by carbamoyl phosphate
synthetase I. This investment is critical for the detoxification of ammonia and the synthesis of urea, reflecting the cycle's role in nitrogen metabolism.
Q5 QUESTION 5 OF 46
Page 2
