BIOL 271 MICROBIOLOGY W/ LAB MODULE 2 EXAM
REVIEW QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES PORTAGE LEARNING
LOCKDOWN BROWSER INSTANT DOWNLOAD PDF.
Core Domains
1. Metabolism Fundamentals: Catabolism vs. Anabolism
2. Enzyme Structure, Function, and Regulation
3. ATP and Energy Transfer
4. Glycolysis and Glucose Catabolism
5. TCA Cycle (Krebs Cycle) and Electron Transport Chain
6. Fermentation and Anaerobic Metabolism
7. Microbial Growth Requirements and Bacterial Growth Curve
8. Photosynthesis and Metabolic Diversity
Introduction
This examination assesses the foundational knowledge of microbial
metabolism and growth required for successful completion of BIOL 271
Module 2 at Portage Learning. It evaluates understanding of catabolic
and anabolic processes, enzyme function and regulation, ATP energy
transfer, cellular respiration pathways, fermentation, microbial growth
requirements, the bacterial growth curve, and photosynthesis. The
examination employs multiple-choice and true/false questions that
mirror the actual Module 2 exam format. Emphasis is placed on
distinguishing between metabolic processes, understanding energy yield
at each stage of glucose catabolism, and applying concepts to microbial
growth and classification. Success on this examination demonstrates
,readiness for advanced microbiology coursework and confirms mastery
of essential metabolic competencies.
SECTION ONE: QUESTIONS 1–100
1. True or False: Metabolism is a controlled set of biochemical
reactions that occur in living organisms in order to maintain life.
A. True
B. False
Correct answer A. True
RATIONALE: Metabolism is defined as a controlled set of
biochemical reactions that occur in living organisms in order to maintain
life. It encompasses both catabolic (breakdown) and anabolic (synthesis)
reactions .
2. True or False: Enzymes slow down chemical reactions to conserve
energy.
A. True
B. False
Correct answer B. False
RATIONALE: Enzymes speed up (catalyze) chemical reactions by
lowering the activation energy required. Slowing reactions would be
energetically disadvantageous .
,3. What is the term for metal ions that assist enzymes during the
catalysis reaction?
A. Active site
B. Cofactor
C. Substrate
D. Coenzyme
Correct answer B. Cofactor
RATIONALE: Cofactors are non-protein chemical compounds,
often metal ions, that assist enzymes during catalysis. They stabilize
substrates or participate in catalytic mechanisms .
4. What is catabolism?
A. The synthesis of complex molecules from simpler ones
B. The process of breaking down larger molecules into useful energy
sources
C. The storage of genetic information
D. The transport of molecules across a membrane
Correct answer B. The process of breaking down larger molecules
into useful energy sources
RATIONALE: Catabolism is the breakdown of complex molecules
into smaller molecules, releasing energy in the process. It is the opposite
of anabolism .
5. Upon cellular injury, which metabolic process is involved during
the growth and repair phases of the cell?
, A. Catabolism
B. Anabolism
C. Fermentation
D. Glycolysis
Correct answer B. Anabolism
RATIONALE: Anabolism is the biosynthesis of macromolecules
from smaller units and is associated with cellular growth and repair.
Catabolism breaks down molecules and would not support repair .
6. An organism that obtains its energy (derives ATP) from photons
of light is called a:
A. Chemotroph
B. Lithotroph
C. Phototroph
D. Organotroph
Correct answer C. Phototroph
RATIONALE: Phototrophic microorganisms derive their energy
from photons of light. Chemotrophs get energy from chemicals, and
lithotrophs specifically get energy from inorganic substances .
7. An organism that derives its energy by removing electrons from
elemental sulfur would be classified as a:
A. Phototroph
B. Chemotroph
REVIEW QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES PORTAGE LEARNING
LOCKDOWN BROWSER INSTANT DOWNLOAD PDF.
Core Domains
1. Metabolism Fundamentals: Catabolism vs. Anabolism
2. Enzyme Structure, Function, and Regulation
3. ATP and Energy Transfer
4. Glycolysis and Glucose Catabolism
5. TCA Cycle (Krebs Cycle) and Electron Transport Chain
6. Fermentation and Anaerobic Metabolism
7. Microbial Growth Requirements and Bacterial Growth Curve
8. Photosynthesis and Metabolic Diversity
Introduction
This examination assesses the foundational knowledge of microbial
metabolism and growth required for successful completion of BIOL 271
Module 2 at Portage Learning. It evaluates understanding of catabolic
and anabolic processes, enzyme function and regulation, ATP energy
transfer, cellular respiration pathways, fermentation, microbial growth
requirements, the bacterial growth curve, and photosynthesis. The
examination employs multiple-choice and true/false questions that
mirror the actual Module 2 exam format. Emphasis is placed on
distinguishing between metabolic processes, understanding energy yield
at each stage of glucose catabolism, and applying concepts to microbial
growth and classification. Success on this examination demonstrates
,readiness for advanced microbiology coursework and confirms mastery
of essential metabolic competencies.
SECTION ONE: QUESTIONS 1–100
1. True or False: Metabolism is a controlled set of biochemical
reactions that occur in living organisms in order to maintain life.
A. True
B. False
Correct answer A. True
RATIONALE: Metabolism is defined as a controlled set of
biochemical reactions that occur in living organisms in order to maintain
life. It encompasses both catabolic (breakdown) and anabolic (synthesis)
reactions .
2. True or False: Enzymes slow down chemical reactions to conserve
energy.
A. True
B. False
Correct answer B. False
RATIONALE: Enzymes speed up (catalyze) chemical reactions by
lowering the activation energy required. Slowing reactions would be
energetically disadvantageous .
,3. What is the term for metal ions that assist enzymes during the
catalysis reaction?
A. Active site
B. Cofactor
C. Substrate
D. Coenzyme
Correct answer B. Cofactor
RATIONALE: Cofactors are non-protein chemical compounds,
often metal ions, that assist enzymes during catalysis. They stabilize
substrates or participate in catalytic mechanisms .
4. What is catabolism?
A. The synthesis of complex molecules from simpler ones
B. The process of breaking down larger molecules into useful energy
sources
C. The storage of genetic information
D. The transport of molecules across a membrane
Correct answer B. The process of breaking down larger molecules
into useful energy sources
RATIONALE: Catabolism is the breakdown of complex molecules
into smaller molecules, releasing energy in the process. It is the opposite
of anabolism .
5. Upon cellular injury, which metabolic process is involved during
the growth and repair phases of the cell?
, A. Catabolism
B. Anabolism
C. Fermentation
D. Glycolysis
Correct answer B. Anabolism
RATIONALE: Anabolism is the biosynthesis of macromolecules
from smaller units and is associated with cellular growth and repair.
Catabolism breaks down molecules and would not support repair .
6. An organism that obtains its energy (derives ATP) from photons
of light is called a:
A. Chemotroph
B. Lithotroph
C. Phototroph
D. Organotroph
Correct answer C. Phototroph
RATIONALE: Phototrophic microorganisms derive their energy
from photons of light. Chemotrophs get energy from chemicals, and
lithotrophs specifically get energy from inorganic substances .
7. An organism that derives its energy by removing electrons from
elemental sulfur would be classified as a:
A. Phototroph
B. Chemotroph
