final exam straighterline
microbiology – Questions with
Answers
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
microbiology – Questions with
Answers
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
