FINAL EXAM STRAIGHTERLINE
MICROBIOLOGY WITH 182 QUESTIONS
AND CORRECT ANSWERS RATED A+
2026/2027[NEWEST!!!]
In the nitrogen cycle, which of the following steps involves removal of nitrogen
from the atmosphere by bacteria?
Nitrogen Fixation
If enough H+ ions are added to pure water to raise the H+ concentration of the
solution to ten times higher than the original concentration, what is the resulting
OH- concentration of the solution?
10-8 M
Fungi are able to reproduce asexually by creating conidiospores and
sporangiospores. Which of the following is an accurate explanation for why it is
advantageous that they are also capable of sexual reproduction?
Offspring from two parents may have variations in form and function that
contribute to survival of the species.
In a laboratory bacterial cell culture that has been infected by a virus, plaques are
areas in which...
the virus has spread and left behind the remains of dead cells.
The sun's energy is delivered as discrete packets that travel as waves and are
called
Photons
Which of the following is a scientific name?
Streptococcus pyogenes
Eosin-methylene blue agar, or EMB, is a commonly used bacteriological medium
for growing gram-negative bacteria from complex environments. It contains two
dyes, eosin and methylene blue, as well as the sugar lactose. Eosin is a pH
indicator that changes color when the medium is acidic, while methylene blue
,inhibits the growth of most gram-positive bacteria. If an organism consumes
lactose, acid will be produced, causing the bacterial colonies to change color.
Based upon this description, this medium is ______
differential and selective
A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the
Last Universal Common Ancestor would show Archaea
branching off the Domain Eukarya.
In the cell cytoplasm, molecules of ATP are a
Solute
Which of the following parts of a microscope magnifies the specimen to produce
a real image of the specimen?
Objective lens
The two major groups of helminths are ___ and the ___
roundworm; flatworms
All of the following pertain to virus envelopes except
located between the capsid and nucleic acid
A protozoan having flagellum would be classified in the genus
Trypanosoma
Antiviral drugs are often difficult to develop, largely because
viruses are obligate intracellular parasites so the drugs must enter the host cell
and often cause toxic side effects in order to destroy the virus
The activation of a prophage is called...
induction
Endospores are
metabolically inactive, resistant to heat and chemical destruction, resistant to
destruction by radiation, living structures
, The endosymbiotic theory has been developed to explain the emergence of...
eukaryotes
A treatment for bacterial infections from the early 20th century has made a
comeback; the use of bacterial viruses to eliminate bacterial infections. Which
explanation most accurately describes the reason for return of this treatment?
A negative RNA virus must first
synthesize a positive RNA copy of its genome
You've just isolated a new bacterium in pure culture, and you culture it on a
general purpose medium where its cells have a coccobacillus morphology. When
you examine the cells after culturing on a variety of differential media, you fine
that in some cases, the cells appear as coccobacillus, but in others, they can be
filamentous, cocci, or club-shaped. The best explanation for this observation is
that..
the bacterium is pleomorphic
Two functions of bacterial appendages are___ and ___
attachment; motility
A group of protozoa that are not motile are the...
Plasmodium sp.
During the Gram stain, the appplication of alcohol results in the decolorization of
___ cells
Gram-negative
Lysozyme is most effective against
gram positive organisms
The transfer of genes during bacterial conjugation involves rigid, tubular
appendages called ___
sex pili
Which of the following does not pertain to helminths?
MICROBIOLOGY WITH 182 QUESTIONS
AND CORRECT ANSWERS RATED A+
2026/2027[NEWEST!!!]
In the nitrogen cycle, which of the following steps involves removal of nitrogen
from the atmosphere by bacteria?
Nitrogen Fixation
If enough H+ ions are added to pure water to raise the H+ concentration of the
solution to ten times higher than the original concentration, what is the resulting
OH- concentration of the solution?
10-8 M
Fungi are able to reproduce asexually by creating conidiospores and
sporangiospores. Which of the following is an accurate explanation for why it is
advantageous that they are also capable of sexual reproduction?
Offspring from two parents may have variations in form and function that
contribute to survival of the species.
In a laboratory bacterial cell culture that has been infected by a virus, plaques are
areas in which...
the virus has spread and left behind the remains of dead cells.
The sun's energy is delivered as discrete packets that travel as waves and are
called
Photons
Which of the following is a scientific name?
Streptococcus pyogenes
Eosin-methylene blue agar, or EMB, is a commonly used bacteriological medium
for growing gram-negative bacteria from complex environments. It contains two
dyes, eosin and methylene blue, as well as the sugar lactose. Eosin is a pH
indicator that changes color when the medium is acidic, while methylene blue
,inhibits the growth of most gram-positive bacteria. If an organism consumes
lactose, acid will be produced, causing the bacterial colonies to change color.
Based upon this description, this medium is ______
differential and selective
A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the
Last Universal Common Ancestor would show Archaea
branching off the Domain Eukarya.
In the cell cytoplasm, molecules of ATP are a
Solute
Which of the following parts of a microscope magnifies the specimen to produce
a real image of the specimen?
Objective lens
The two major groups of helminths are ___ and the ___
roundworm; flatworms
All of the following pertain to virus envelopes except
located between the capsid and nucleic acid
A protozoan having flagellum would be classified in the genus
Trypanosoma
Antiviral drugs are often difficult to develop, largely because
viruses are obligate intracellular parasites so the drugs must enter the host cell
and often cause toxic side effects in order to destroy the virus
The activation of a prophage is called...
induction
Endospores are
metabolically inactive, resistant to heat and chemical destruction, resistant to
destruction by radiation, living structures
, The endosymbiotic theory has been developed to explain the emergence of...
eukaryotes
A treatment for bacterial infections from the early 20th century has made a
comeback; the use of bacterial viruses to eliminate bacterial infections. Which
explanation most accurately describes the reason for return of this treatment?
A negative RNA virus must first
synthesize a positive RNA copy of its genome
You've just isolated a new bacterium in pure culture, and you culture it on a
general purpose medium where its cells have a coccobacillus morphology. When
you examine the cells after culturing on a variety of differential media, you fine
that in some cases, the cells appear as coccobacillus, but in others, they can be
filamentous, cocci, or club-shaped. The best explanation for this observation is
that..
the bacterium is pleomorphic
Two functions of bacterial appendages are___ and ___
attachment; motility
A group of protozoa that are not motile are the...
Plasmodium sp.
During the Gram stain, the appplication of alcohol results in the decolorization of
___ cells
Gram-negative
Lysozyme is most effective against
gram positive organisms
The transfer of genes during bacterial conjugation involves rigid, tubular
appendages called ___
sex pili
Which of the following does not pertain to helminths?
