3/10/26, 12:28
PM
D311 MICROBIOLOGY EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)/GRADE A+ ASSURED.
Which statement describes prokaryotic cells? A
a) Prokaryotic cells are found in coccus form in both
pairs and clusters. This is correct because prokaryotic cells can form cocus in
both pairs and
b) Prokaryotic cells have multiple rod-shaped
clusters chromosomes.
c) Prokaryotic cells are found in chains
of rods but not single rods.
d) Prokaryotic cells have a nucleus
surrounded by a complex nuclear
membrane.
Which statement describes eukaryotic cells? B
a) The exoskeletons of eukaryotic
cells maintain and support the
cells' shapes.
b) The nuclei of eukaryotic cells are
surrounded by complex nuclear
membranes.
c) The genomes of eukaryotic
cells are usually packaged in
single circular chromosomes.
d) The organelles of eukaryotic cells
are held in place by semipermeable
exoskeletons.
Which statement describes eukaryotic flagella? D
a) Eukaryotic flagella can cover the
entire surface of a cell.
b) Eukaryotic flagella are rotating structures.
c) Eukaryotic flagella have twelve pairs of microtubules.
d) Eukaryotic flagella are flexible, whip-like structures.
https://quizlet.com/854000420/d311-microbiology- 1/32
flash-cards/
,3/10/26, 12:28
PM
Which statement describes the
endomembrane
B system?
a) It is attached to the smooth
endoplasmic reticulum and makes
proteins for insertion into the cell
membrane.
b) It includes the Golgi apparatus,
lysosomes, and vesicles.
c) It is a system that uses diffusion to
transport materials inside of the cell.
d) It lacks membrane-bound organelles.
Which statement accurately describes
similarities
B between protozoa and fungi?
a) Both perform chemosynthesis.
b) Both can be harmful or harmless
depending on the context.
c) Both are made of long filaments
that form visible colonies.
d) Both move with help from cilia and flagella.
Why are algae considered photosynthetic organisms? C
a) Algae cell walls are constructed
with a material called
peptidoglycan.
b) Algae contain substances that can be
converted into biofuels.
c) Algae produce chemical energy from
the sun's light energy.
d) Algae create waste products that
other organisms can use to make
energy.
Why are plasmids important to the
survival of
https://quizlet.com/854000420/d311-microbiology- 2/32
flash-cards/
,3/10/26, 12:28
PM
D organisms?
a) Plasmids exclusively contain the genes responsible Plasmids often carry genes that
can offer beneficial traits such as antibiotic for cellular replication in bacteria. resistance
b) Plasmids can store excess nutrients
in the cytoplasm of the cell.
c) Plasmids protect the bacterial
genome in a dormant state during
unfavorable environmental
conditions.
d) Plasmids carry genetic material,
apart from the genome, that can
benefit the organism.
Which statement describes bacteria? B
a) Some bacteria are eukaryotes.
b) Some bacteria have cell walls composed of mycolic Mycolic acid can be found
in the cell walls of acid-fast bacteria acid.
c) Some bacteria are motile by cilia.
d) Some bacteria have cell walls composed of chitin.
Why are prokaryotes vital to life? Prokaryotes are vital to life because they are able to
recycle elements like carbon and nutrients. Organisms
like animals need organic carbon in order to grow but,
unlike prokaryotes, they are unable to use inorganic
carbon sources like CO2. The enzyme nitrogenase is
only found in prokaryotes
https://quizlet.com/854000420/d311-microbiology- 3/32
flash-cards/
, 3/10/26, 12:28
PM
Which aspect of nutrient cycling is
performed only by
D prokaryotes?
a) Respiration process The enzyme nitrogenase is only found in prokaryotes; it is
vital to life and the
b) Carbon fixation process of nitrogen fixation
c) Nitrate assimilation
d) Nitrogen fixation
How does microbial bioremediation
benefit the
B environment?
a) By helping to minimize the growth of pathogens in This is the correct answer
because the definition of bioremediation is the different parts of the body process of bacteria
using a toxic structure to grow which leads to it being
b) By helping to metabolize and remove pollutants in removed from the environment.
Occurs often by breaking it down into its the atmosphere nontoxic components
c) By producing complex organic
pharmaceutical compounds used in
antibiotics, vaccines, and vitamins
d) By producing gases, such as carbon
dioxide, which are used to make
biofuels
What describes the relationship of
pathogens to
A virulence?
a) Highly virulent pathogens almost
always lead to a disease state when
introduced to the body.
b) Pathogens that cause an infection
cannot also be virulent.
c) Highly virulent pathogens are highly
susceptible to the human immune
system.
d) Less virulent pathogens are less
https://quizlet.com/854000420/d311-microbiology- 4/32
flash-cards/
PM
D311 MICROBIOLOGY EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)/GRADE A+ ASSURED.
Which statement describes prokaryotic cells? A
a) Prokaryotic cells are found in coccus form in both
pairs and clusters. This is correct because prokaryotic cells can form cocus in
both pairs and
b) Prokaryotic cells have multiple rod-shaped
clusters chromosomes.
c) Prokaryotic cells are found in chains
of rods but not single rods.
d) Prokaryotic cells have a nucleus
surrounded by a complex nuclear
membrane.
Which statement describes eukaryotic cells? B
a) The exoskeletons of eukaryotic
cells maintain and support the
cells' shapes.
b) The nuclei of eukaryotic cells are
surrounded by complex nuclear
membranes.
c) The genomes of eukaryotic
cells are usually packaged in
single circular chromosomes.
d) The organelles of eukaryotic cells
are held in place by semipermeable
exoskeletons.
Which statement describes eukaryotic flagella? D
a) Eukaryotic flagella can cover the
entire surface of a cell.
b) Eukaryotic flagella are rotating structures.
c) Eukaryotic flagella have twelve pairs of microtubules.
d) Eukaryotic flagella are flexible, whip-like structures.
https://quizlet.com/854000420/d311-microbiology- 1/32
flash-cards/
,3/10/26, 12:28
PM
Which statement describes the
endomembrane
B system?
a) It is attached to the smooth
endoplasmic reticulum and makes
proteins for insertion into the cell
membrane.
b) It includes the Golgi apparatus,
lysosomes, and vesicles.
c) It is a system that uses diffusion to
transport materials inside of the cell.
d) It lacks membrane-bound organelles.
Which statement accurately describes
similarities
B between protozoa and fungi?
a) Both perform chemosynthesis.
b) Both can be harmful or harmless
depending on the context.
c) Both are made of long filaments
that form visible colonies.
d) Both move with help from cilia and flagella.
Why are algae considered photosynthetic organisms? C
a) Algae cell walls are constructed
with a material called
peptidoglycan.
b) Algae contain substances that can be
converted into biofuels.
c) Algae produce chemical energy from
the sun's light energy.
d) Algae create waste products that
other organisms can use to make
energy.
Why are plasmids important to the
survival of
https://quizlet.com/854000420/d311-microbiology- 2/32
flash-cards/
,3/10/26, 12:28
PM
D organisms?
a) Plasmids exclusively contain the genes responsible Plasmids often carry genes that
can offer beneficial traits such as antibiotic for cellular replication in bacteria. resistance
b) Plasmids can store excess nutrients
in the cytoplasm of the cell.
c) Plasmids protect the bacterial
genome in a dormant state during
unfavorable environmental
conditions.
d) Plasmids carry genetic material,
apart from the genome, that can
benefit the organism.
Which statement describes bacteria? B
a) Some bacteria are eukaryotes.
b) Some bacteria have cell walls composed of mycolic Mycolic acid can be found
in the cell walls of acid-fast bacteria acid.
c) Some bacteria are motile by cilia.
d) Some bacteria have cell walls composed of chitin.
Why are prokaryotes vital to life? Prokaryotes are vital to life because they are able to
recycle elements like carbon and nutrients. Organisms
like animals need organic carbon in order to grow but,
unlike prokaryotes, they are unable to use inorganic
carbon sources like CO2. The enzyme nitrogenase is
only found in prokaryotes
https://quizlet.com/854000420/d311-microbiology- 3/32
flash-cards/
, 3/10/26, 12:28
PM
Which aspect of nutrient cycling is
performed only by
D prokaryotes?
a) Respiration process The enzyme nitrogenase is only found in prokaryotes; it is
vital to life and the
b) Carbon fixation process of nitrogen fixation
c) Nitrate assimilation
d) Nitrogen fixation
How does microbial bioremediation
benefit the
B environment?
a) By helping to minimize the growth of pathogens in This is the correct answer
because the definition of bioremediation is the different parts of the body process of bacteria
using a toxic structure to grow which leads to it being
b) By helping to metabolize and remove pollutants in removed from the environment.
Occurs often by breaking it down into its the atmosphere nontoxic components
c) By producing complex organic
pharmaceutical compounds used in
antibiotics, vaccines, and vitamins
d) By producing gases, such as carbon
dioxide, which are used to make
biofuels
What describes the relationship of
pathogens to
A virulence?
a) Highly virulent pathogens almost
always lead to a disease state when
introduced to the body.
b) Pathogens that cause an infection
cannot also be virulent.
c) Highly virulent pathogens are highly
susceptible to the human immune
system.
d) Less virulent pathogens are less
https://quizlet.com/854000420/d311-microbiology- 4/32
flash-cards/
