Microbiology final exam- Questions
And Correct Solutions| Updated
Which of the following is the correct name of the bacteria that causes
anthrax? - Ans--Bacillus anthracis
Which key characteristics of prokaryotes differentiates a prokaryote from
an eukaryote? - Ans--Absence of membrane bound organelles
Which of the following is classified as eukaryotic? - Ans--Saccharomyces
cerevisiae fungus used to make bread
If endospores had been present in the Pasteur's growth medium, would the
outcome of the experiment with the swan neck flasks been the same? -
Ans--No, the brother would have been cloudy from the bacterial growth
Eukaryotic structure that most closely resembles prokaryotic cell - Ans--
Mitochondrion
Mosquitos is an example of - Ans--Vector
Disproved the theory of spontaneous generation - Ans--Louis Pasteur
Resolution is - Ans--The minimum distance between two objects where the
two objects can be distinguished as separate
Pathway of light used to visualize a specimen - Ans--Light source
Condenser
Specimen
Objective
Eyepiece
Not true about gram stain - Ans--Gram negative cells appear colorless after
addition of the mordant
, Fungus or bacteria that rarely causes disease but easily infects people is
what type of pathogen? - Ans--Opportunistic
Where can a hydrogen bond be formed on water? - Ans--Where there is a
HO
Know the structure of a lipid - Ans--Water, protein, nucleic acid, and carb
A cells genome consists of 20% thymine and what percentage of guanine? -
Ans--30%
Holds two stands of DNA together - Ans--Hydrogen bond
Bacterial cell wall offers protection against - Ans--Hypotonic environment
Biomolecules and descriptions matched incorrectly - Ans--Lipid-
polysaccharide found in membranes
This molecule is a building block for which type of polymer? - Ans--RNA
Following statements about bacterial motility is not true - Ans--Some
bacteria use thylakoids to move in a "gliding" type motion
Discover new species of microbe-determining between if
prokaryote/eukaryote - Ans--Mitochondria
Considered most virulent, based on infectious dose [ID50] - Ans--Rickettsia
rickettsil, ID50=1
Agents transmitted by mosquitos enter human hosts via what portal of
entry? - Ans--Parenteral route
Unknown bacterial sample has been correctly gram stained and all cells
appear pink, which of the following is possible regarding these cells? - Ans--
They are gram negative and could be Eschenchia
Lab question from homework- gram staining skills - Ans--Cell walls in the
culture you used have begun to deteriorate
And Correct Solutions| Updated
Which of the following is the correct name of the bacteria that causes
anthrax? - Ans--Bacillus anthracis
Which key characteristics of prokaryotes differentiates a prokaryote from
an eukaryote? - Ans--Absence of membrane bound organelles
Which of the following is classified as eukaryotic? - Ans--Saccharomyces
cerevisiae fungus used to make bread
If endospores had been present in the Pasteur's growth medium, would the
outcome of the experiment with the swan neck flasks been the same? -
Ans--No, the brother would have been cloudy from the bacterial growth
Eukaryotic structure that most closely resembles prokaryotic cell - Ans--
Mitochondrion
Mosquitos is an example of - Ans--Vector
Disproved the theory of spontaneous generation - Ans--Louis Pasteur
Resolution is - Ans--The minimum distance between two objects where the
two objects can be distinguished as separate
Pathway of light used to visualize a specimen - Ans--Light source
Condenser
Specimen
Objective
Eyepiece
Not true about gram stain - Ans--Gram negative cells appear colorless after
addition of the mordant
, Fungus or bacteria that rarely causes disease but easily infects people is
what type of pathogen? - Ans--Opportunistic
Where can a hydrogen bond be formed on water? - Ans--Where there is a
HO
Know the structure of a lipid - Ans--Water, protein, nucleic acid, and carb
A cells genome consists of 20% thymine and what percentage of guanine? -
Ans--30%
Holds two stands of DNA together - Ans--Hydrogen bond
Bacterial cell wall offers protection against - Ans--Hypotonic environment
Biomolecules and descriptions matched incorrectly - Ans--Lipid-
polysaccharide found in membranes
This molecule is a building block for which type of polymer? - Ans--RNA
Following statements about bacterial motility is not true - Ans--Some
bacteria use thylakoids to move in a "gliding" type motion
Discover new species of microbe-determining between if
prokaryote/eukaryote - Ans--Mitochondria
Considered most virulent, based on infectious dose [ID50] - Ans--Rickettsia
rickettsil, ID50=1
Agents transmitted by mosquitos enter human hosts via what portal of
entry? - Ans--Parenteral route
Unknown bacterial sample has been correctly gram stained and all cells
appear pink, which of the following is possible regarding these cells? - Ans--
They are gram negative and could be Eschenchia
Lab question from homework- gram staining skills - Ans--Cell walls in the
culture you used have begun to deteriorate
