Straighterline microbiology Final exam Revision
Questions with Complete Answers. New, Verified
updates
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▪ 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
▪ Covalent bonds - -✓result from sharing electrons
▪ One nucleotide contains one - -✓phosphate, pentose sugar, nitrogen base
▪ Among the types of microorganisms, the ___. are noncellullar - -✓viruses
▪ Using microbes to detoxify a site contaminated with heavy metals is an example of ____ - -
✓Bioremediation
▪ C6H12O6+C6H12O6---> C12H22O11+H2O - -✓a dehydration synthesis
▪ Which scientific field is involved in the identification, classification, and naming of organisms? - -
✓Taxonomy
▪ Which type of medium would be the best choice when shipping a sample of bacteria from a
clinic to a laboratory for testing? - -✓Transport-meduim
▪ Which activity is an example of biotechnology? - -✓
Questions with Complete Answers. New, Verified
updates
For inquiries Email at:
▪ 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
▪ Covalent bonds - -✓result from sharing electrons
▪ One nucleotide contains one - -✓phosphate, pentose sugar, nitrogen base
▪ Among the types of microorganisms, the ___. are noncellullar - -✓viruses
▪ Using microbes to detoxify a site contaminated with heavy metals is an example of ____ - -
✓Bioremediation
▪ C6H12O6+C6H12O6---> C12H22O11+H2O - -✓a dehydration synthesis
▪ Which scientific field is involved in the identification, classification, and naming of organisms? - -
✓Taxonomy
▪ Which type of medium would be the best choice when shipping a sample of bacteria from a
clinic to a laboratory for testing? - -✓Transport-meduim
▪ Which activity is an example of biotechnology? - -✓
