Final Exam___ Straighterline Microbiology Final
Exam Questions Correctly Answered__
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
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.
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 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
Exam Questions Correctly Answered__
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
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.
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 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
