Portage Learning / Geneva
College
M O D U L E 7 E X A M I N AT I O N
BioChem 210: Biochemistry
Metabolism Integration
Course: CHEM 210 Biochemistry
Total Questions: 50 Multiple Choice
Academic Year:
Curriculum: Portage Learning Standards
50 Questi ons wi th Veri fi ed Answers and Comprehensi ve
Rati onal es
, CHEM 210 Module 7 Exam | Portage Learning / Geneva College | 2026-2027
BioChem 210 Module 7 Examination
Portage Learning / Geneva College | Academic Year 2026-2027
Metabolism Integration | 50 Questions with Verified Answers and Comprehensive Rationales
Section 1: Bioenergetics and Metabolic Principles (Q1-Q10)
Q1: A researcher measures the delta G of a biochemical reaction and finds it is -7.3 kcal/mol. Which of the
following correctly describes this reaction?
A. The reaction is endergonic and requires energy input
B. The reaction is at equilibrium and no net change occurs
C. The reaction is exergonic and proceeds spontaneously [CORRECT]
D. The reaction cannot occur in a living cell
Correct Answer: C
Rationale: A negative delta G indicates the reaction is exergonic, meaning it releases energy and proceeds spontaneously
under standard conditions. This is a fundamental principle of bioenergetics per CHEM 210 Module 7. Option A
incorrectly describes a positive delta G, option B describes delta G = 0, and option D is false because exergonic reactions
are essential to cellular metabolism.
Q2: A student states that ATP hydrolysis has a negative delta G and therefore can power other cellular
processes. Is this statement accurate, and what is the underlying biochemical principle?
A. No, because ATP hydrolysis actually has a positive delta G and stores energy
B. Yes, because the energy released from ATP hydrolysis can be coupled to endergonic reactions to
make them thermodynamically favorable [CORRECT]
C. No, because ATP hydrolysis cannot be coupled to other reactions in the cell
D. Yes, but only in the mitochondria where ATP is synthesized
Correct Answer: B
Rationale: ATP hydrolysis (ATP + H2O -> ADP + Pi) has a delta G of approximately -7.3 kcal/mol, making it
exergonic. This released energy can be coupled to drive endergonic (non-spontaneous) reactions through shared
intermediates. This coupling mechanism is central to cellular energy metabolism as covered in CHEM 210 Module 7.
Option A reverses the sign, option C contradicts the coupling principle, and option D incorrectly restricts ATP usage to the
mitochondria.
Q3: Which of the following best defines flux in the context of metabolic pathways?
A. The total number of enzymes in a pathway
B. The rate of flow of molecules through a biochemical pathway at a given time [CORRECT]
C. The concentration of the final product of a pathway
D. The energy required to initiate a metabolic pathway
Correct Answer: B
Rationale: Flux specifically refers to the rate at which molecules move through a metabolic pathway, indicating how
active the pathway is at any given time. This is a key bioenergetics concept in CHEM 210 Module 7. Option A describes
enzyme count, not flux; option C describes product concentration; and option D describes activation energy.
Q4: A metabolic pathway is best described by which of the following statements?
A. A metabolic pathway is a single enzyme-catalyzed reaction that converts a substrate to a product
B. A metabolic pathway is a series of consecutive, enzyme-catalyzed reactions [CORRECT]
Page 1
College
M O D U L E 7 E X A M I N AT I O N
BioChem 210: Biochemistry
Metabolism Integration
Course: CHEM 210 Biochemistry
Total Questions: 50 Multiple Choice
Academic Year:
Curriculum: Portage Learning Standards
50 Questi ons wi th Veri fi ed Answers and Comprehensi ve
Rati onal es
, CHEM 210 Module 7 Exam | Portage Learning / Geneva College | 2026-2027
BioChem 210 Module 7 Examination
Portage Learning / Geneva College | Academic Year 2026-2027
Metabolism Integration | 50 Questions with Verified Answers and Comprehensive Rationales
Section 1: Bioenergetics and Metabolic Principles (Q1-Q10)
Q1: A researcher measures the delta G of a biochemical reaction and finds it is -7.3 kcal/mol. Which of the
following correctly describes this reaction?
A. The reaction is endergonic and requires energy input
B. The reaction is at equilibrium and no net change occurs
C. The reaction is exergonic and proceeds spontaneously [CORRECT]
D. The reaction cannot occur in a living cell
Correct Answer: C
Rationale: A negative delta G indicates the reaction is exergonic, meaning it releases energy and proceeds spontaneously
under standard conditions. This is a fundamental principle of bioenergetics per CHEM 210 Module 7. Option A
incorrectly describes a positive delta G, option B describes delta G = 0, and option D is false because exergonic reactions
are essential to cellular metabolism.
Q2: A student states that ATP hydrolysis has a negative delta G and therefore can power other cellular
processes. Is this statement accurate, and what is the underlying biochemical principle?
A. No, because ATP hydrolysis actually has a positive delta G and stores energy
B. Yes, because the energy released from ATP hydrolysis can be coupled to endergonic reactions to
make them thermodynamically favorable [CORRECT]
C. No, because ATP hydrolysis cannot be coupled to other reactions in the cell
D. Yes, but only in the mitochondria where ATP is synthesized
Correct Answer: B
Rationale: ATP hydrolysis (ATP + H2O -> ADP + Pi) has a delta G of approximately -7.3 kcal/mol, making it
exergonic. This released energy can be coupled to drive endergonic (non-spontaneous) reactions through shared
intermediates. This coupling mechanism is central to cellular energy metabolism as covered in CHEM 210 Module 7.
Option A reverses the sign, option C contradicts the coupling principle, and option D incorrectly restricts ATP usage to the
mitochondria.
Q3: Which of the following best defines flux in the context of metabolic pathways?
A. The total number of enzymes in a pathway
B. The rate of flow of molecules through a biochemical pathway at a given time [CORRECT]
C. The concentration of the final product of a pathway
D. The energy required to initiate a metabolic pathway
Correct Answer: B
Rationale: Flux specifically refers to the rate at which molecules move through a metabolic pathway, indicating how
active the pathway is at any given time. This is a key bioenergetics concept in CHEM 210 Module 7. Option A describes
enzyme count, not flux; option C describes product concentration; and option D describes activation energy.
Q4: A metabolic pathway is best described by which of the following statements?
A. A metabolic pathway is a single enzyme-catalyzed reaction that converts a substrate to a product
B. A metabolic pathway is a series of consecutive, enzyme-catalyzed reactions [CORRECT]
Page 1
