FINAL EXAM STRAIGHTERLINE MICROBIOLOGY
EXAM UPDATED 2026/2027 ACTUAL QUESTIONS
AND CORRECT ANSWERS | WITH COMPLETE
QUESTIONS WITH CORRECT ANSWERS
|VERIFIED//GRADED A+// 100% PASS
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
,What is a characteristic of aerobic respiration?
The process includes glycolysis, the Krebs cycle, and the electron
transport chain.
In completing protein synthesis in a prokaryote, what basic message is
carried by a specialized codon that has no corresponding tRNA?
"Terminate here."
Microbial drug resistance can be caused by mutations or by introduction
of new genes into a population. Which of the following can only be
caused by the introduction of new genes into a population?
new enzymes that inactivate the drug are synthesized
Why do the hands, feet, and breasts have more lymphatic vessels for host
defense than other areas of the human body?
They have a high risk for infection due to frequent contact.
Penicillin functions as an antimicrobial agent by inhibiting bacterial...
cell wall synthesis.
Which class of eukaryotic microorganisms can be subdivided into groups
such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
Protozoa
Genetic material can be excised from one chromosome and directly
integrated into another via...
transposons
What immune cell secretes numerous cytokines that help to coordinate
the response of other immune cells?
TH cell
What enzymes are used to amplify DNA during PCR?
DNA polymerase
, 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
The _____ of the microscope holds and allows selection of the objective
lenses.
nosepiece
Characteristics shared by all cells include
the presence of cellular fluid, the possession of genetic information, and
a membrane serving as a cell boundary.
Anything that occupies space and mass is called...
matter
Trees of life illustrate the phylogenetic relationships of all organisms
were traditionally based on _____; newer methods for determining
phylogeny rely on _____.
Morphology; nucleic acid sequences
EXAM UPDATED 2026/2027 ACTUAL QUESTIONS
AND CORRECT ANSWERS | WITH COMPLETE
QUESTIONS WITH CORRECT ANSWERS
|VERIFIED//GRADED A+// 100% PASS
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
,What is a characteristic of aerobic respiration?
The process includes glycolysis, the Krebs cycle, and the electron
transport chain.
In completing protein synthesis in a prokaryote, what basic message is
carried by a specialized codon that has no corresponding tRNA?
"Terminate here."
Microbial drug resistance can be caused by mutations or by introduction
of new genes into a population. Which of the following can only be
caused by the introduction of new genes into a population?
new enzymes that inactivate the drug are synthesized
Why do the hands, feet, and breasts have more lymphatic vessels for host
defense than other areas of the human body?
They have a high risk for infection due to frequent contact.
Penicillin functions as an antimicrobial agent by inhibiting bacterial...
cell wall synthesis.
Which class of eukaryotic microorganisms can be subdivided into groups
such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
Protozoa
Genetic material can be excised from one chromosome and directly
integrated into another via...
transposons
What immune cell secretes numerous cytokines that help to coordinate
the response of other immune cells?
TH cell
What enzymes are used to amplify DNA during PCR?
DNA polymerase
, 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
The _____ of the microscope holds and allows selection of the objective
lenses.
nosepiece
Characteristics shared by all cells include
the presence of cellular fluid, the possession of genetic information, and
a membrane serving as a cell boundary.
Anything that occupies space and mass is called...
matter
Trees of life illustrate the phylogenetic relationships of all organisms
were traditionally based on _____; newer methods for determining
phylogeny rely on _____.
Morphology; nucleic acid sequences
