PORTAGE BIOD 171 FINAL EXAM NEWEST 2026
ACTUAL EXAM TEST BANK| BIOD 171
MICROBIOLOGY EXAM REVIEW WITH COMPLETE 350
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ GRADED A+
1. At a generalized level, all cells are comprised of what?
a) Organelles
b) Macromolecules
c) Organisms
d) Tissues
Correct Answer: b) Macromolecules
Rationale: Cells are constructed primarily from four classes of
macromolecules—proteins, lipids, nucleic acids, and
polysaccharides—that collectively perform structural, catalytic, and
informational functions necessary for cellular life .
1
,2. What is the smallest biological unit of life?
a) Atom
b) Molecule
c) Cell
d) Organelle
Correct Answer: c) Cell
Rationale: The cell represents the fundamental structural and
functional unit of life, capable of autonomous processes necessary
for living systems, including energy transformation, replication, and
response to environmental stimuli .
3. True or False: A virus is considered a microorganism.
a) True
b) False
2
,Correct Answer: b) False
Rationale: Viruses lack cellular structure and independent metabolic
machinery, which disqualifies them from classification as
microorganisms (defined as unicellular life forms). However, viruses
are classified as microbes, a broader category that includes both
living microorganisms and non-living infectious agents .
4. What are the four main types of macromolecules found in
cells?
a) Carbohydrates, Lipids, Proteins, Nucleic acids
b) Glucose, Fructose, Sucrose, Starch
c) DNA, RNA, ATP, NADH
d) Amino acids, Nucleotides, Fatty acids, Monosaccharides
Correct Answer: a) Carbohydrates, Lipids, Proteins, Nucleic
acids
Rationale: These four classes represent fundamental biomolecules
3
, serving structural, informational, and energy storage functions vital
for cellular life. Carbohydrates provide energy and structure, lipids
form membranes and store energy, proteins perform enzymatic and
structural roles, and nucleic acids store and transmit genetic
information .
5. Proteins are formed from various combinations of _______,
of which there are _______ known forms.
a) Nucleotides; 4
b) Amino acids; 20
c) Fatty acids; variable
d) Monosaccharides; 6
Correct Answer: b) Amino acids; 20
Rationale: Proteins are polymers of 20 standard amino acids, each
with distinct side chains affecting folding and function. This diversity
4
ACTUAL EXAM TEST BANK| BIOD 171
MICROBIOLOGY EXAM REVIEW WITH COMPLETE 350
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ GRADED A+
1. At a generalized level, all cells are comprised of what?
a) Organelles
b) Macromolecules
c) Organisms
d) Tissues
Correct Answer: b) Macromolecules
Rationale: Cells are constructed primarily from four classes of
macromolecules—proteins, lipids, nucleic acids, and
polysaccharides—that collectively perform structural, catalytic, and
informational functions necessary for cellular life .
1
,2. What is the smallest biological unit of life?
a) Atom
b) Molecule
c) Cell
d) Organelle
Correct Answer: c) Cell
Rationale: The cell represents the fundamental structural and
functional unit of life, capable of autonomous processes necessary
for living systems, including energy transformation, replication, and
response to environmental stimuli .
3. True or False: A virus is considered a microorganism.
a) True
b) False
2
,Correct Answer: b) False
Rationale: Viruses lack cellular structure and independent metabolic
machinery, which disqualifies them from classification as
microorganisms (defined as unicellular life forms). However, viruses
are classified as microbes, a broader category that includes both
living microorganisms and non-living infectious agents .
4. What are the four main types of macromolecules found in
cells?
a) Carbohydrates, Lipids, Proteins, Nucleic acids
b) Glucose, Fructose, Sucrose, Starch
c) DNA, RNA, ATP, NADH
d) Amino acids, Nucleotides, Fatty acids, Monosaccharides
Correct Answer: a) Carbohydrates, Lipids, Proteins, Nucleic
acids
Rationale: These four classes represent fundamental biomolecules
3
, serving structural, informational, and energy storage functions vital
for cellular life. Carbohydrates provide energy and structure, lipids
form membranes and store energy, proteins perform enzymatic and
structural roles, and nucleic acids store and transmit genetic
information .
5. Proteins are formed from various combinations of _______,
of which there are _______ known forms.
a) Nucleotides; 4
b) Amino acids; 20
c) Fatty acids; variable
d) Monosaccharides; 6
Correct Answer: b) Amino acids; 20
Rationale: Proteins are polymers of 20 standard amino acids, each
with distinct side chains affecting folding and function. This diversity
4
