final exam straighterline microbiology
questions and answers
In the nitrogen cycle, which of the following steps involves removal of nitrogen
from the atmosphere by bacteria? - correct answer ✅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? - correct answer ✅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? - correct answer
✅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... - correct answer ✅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 - correct answer ✅Photons
,final exam straighterline microbiology
questions and answers
What is a characteristic of aerobic respiration? - correct answer ✅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? - correct answer
✅"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? - correct answer ✅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? - correct answer ✅They have a high risk for
infection due to frequent contact.
Penicillin functions as an antimicrobial agent by inhibiting bacterial... - correct
answer ✅cell wall synthesis.
,final exam straighterline microbiology
questions and answers
Which class of eukaryotic microorganisms can be subdivided into groups such as
Mastigophora, Sarcodina, Ciliophora, and Apicomplexa? - correct answer
✅Protozoa
Genetic material can be excised from one chromosome and directly integrated
into another via... - correct answer ✅transposons
What immune cell secretes numerous cytokines that help to coordinate the
response of other immune cells? - correct answer ✅TH cell
What enzymes are used to amplify DNA during PCR? - correct answer ✅DNA
polymerase
Which of the following is a scientific name? - correct answer ✅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
, final exam straighterline microbiology
questions and answers
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 ______ - correct answer
✅differential and selective
A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the
Last Universal Common Ancestor would show Archaea - correct answer
✅branching off the Domain Eukarya.
In the cell cytoplasm, molecules of ATP are a - correct answer ✅solute
The _____ of the microscope holds and allows selection of the objective lenses. -
correct answer ✅nosepiece
Characteristics shared by all cells include - correct answer ✅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... - correct answer ✅matter
questions and answers
In the nitrogen cycle, which of the following steps involves removal of nitrogen
from the atmosphere by bacteria? - correct answer ✅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? - correct answer ✅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? - correct answer
✅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... - correct answer ✅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 - correct answer ✅Photons
,final exam straighterline microbiology
questions and answers
What is a characteristic of aerobic respiration? - correct answer ✅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? - correct answer
✅"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? - correct answer ✅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? - correct answer ✅They have a high risk for
infection due to frequent contact.
Penicillin functions as an antimicrobial agent by inhibiting bacterial... - correct
answer ✅cell wall synthesis.
,final exam straighterline microbiology
questions and answers
Which class of eukaryotic microorganisms can be subdivided into groups such as
Mastigophora, Sarcodina, Ciliophora, and Apicomplexa? - correct answer
✅Protozoa
Genetic material can be excised from one chromosome and directly integrated
into another via... - correct answer ✅transposons
What immune cell secretes numerous cytokines that help to coordinate the
response of other immune cells? - correct answer ✅TH cell
What enzymes are used to amplify DNA during PCR? - correct answer ✅DNA
polymerase
Which of the following is a scientific name? - correct answer ✅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
, final exam straighterline microbiology
questions and answers
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 ______ - correct answer
✅differential and selective
A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the
Last Universal Common Ancestor would show Archaea - correct answer
✅branching off the Domain Eukarya.
In the cell cytoplasm, molecules of ATP are a - correct answer ✅solute
The _____ of the microscope holds and allows selection of the objective lenses. -
correct answer ✅nosepiece
Characteristics shared by all cells include - correct answer ✅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... - correct answer ✅matter
