MICR 290 - Lab Final UPDATED ACTUAL Questions and CORRECT Answers
Which of the following represents a physical method of - Refrigeration/Freezing (Microbiostatic)
preventing the growth of microorganisms? - Drying/Dessication (lack of water)
- High salt/sugar (osmotic lysis)
- Radiation (non-ionizing (UV), DNA damage)
- Moist/Dry heat (protein denatures)
The use of UV to control microbial growth results in Pyrimidine dimers
which of the following lesions to DNA?
Which of the following will destroy bacterial - Steam under pressure (autoclave)
endospores? - Incineration
- Ethylene oxide gas
What does the term antibiotic mean? Antimicrobial agent specifically for bacterial infections
Which of the following methods is most suitable for Ozone is the best as it can damage the cell walls of bacteria (UV light is a bit
disinfection of a drinking water sample that is worse than ozone)
contaminated with chlorine-resistant pathogenic
bacteria?
What is the purpose of the Kirby-Bauer method? Also called the Disk Diffusion Test, tests the effectiveness of antibiotics against
bacteria (or the bacteria's sensitivity to antibiotics)
Epidemiologically speaking, a disease such as Malaria, Endemic
which is regularly and expectedly found among people
in sub-Saharan Africa, is considered
, Your patient suffers from septicemia; after isolation, you The best options would be the antibiotics that have the widest diameter or largest
order a Kirby Bauer test to determine which antibiotic is circle. The bigger the number, the more effective the antibiotic is.
the most appropriate for the treatment. Looking at the
figure below, which antibiotic is your first correct choice,
and which one is your second correct choice for treating
your patient?
Which of the following microorganisms, when causing an - Streptococcus pyogenes/pneumoniae
infection, can be treated with penicillin? - Bacillus anthracis
Which of the following categories of microorganisms' Fungi/Mold (Penicillium)
release penicillin?
Which of the following represents way(s) by which food - Improper handling during food processing, things like cross contamination with
provided to the public can be contaminated by harmful raw food
microbes? - Exposure to contaminates in soil, water, and mechanical vectors like flies and
roaches
- Improper storage: Moisture content, pH, temperature can affect spoilage
- Improper cooking temp
Organisms that grow in high salt concentrations are Halophiles
called?
Mannitol salt agar is an example of which type of media? Selective and Differential due to high salt (selective for halophiles) and ability to
ferment (differential)
Growth of rapid Lactose fermenting Gram-negative rods True
on Eosin-Methylene blue agar results in green sheen-
colored colonies
The presence of coliform bacteria in the water indicates Fecal
what type of contamination?
Why did Typhoid Mary refuse to accept that she was a Was asymptomatic
typhoid carrier?
The causative agent of Typhoid Mary's infection was a Salmonella enterica serotype Typhi (bacteria)
Which of the following enzymes in aerobic bacteria Catalase
detoxifies hydrogen peroxide by converting it to water
and oxygen?
Where in aerobic bacteria are the components of the Cytoplasmic membrane
electron transport chain located?
Using the oxidase reagent in oxidase-positive bacteria Due to reaction with cytochrome c, it'll turn dark purple/blue
will result in which color formation?
What does ELISA stand for? Enzyme Linked Immunosorbent Assay
Which of the following represents a physical method of - Refrigeration/Freezing (Microbiostatic)
preventing the growth of microorganisms? - Drying/Dessication (lack of water)
- High salt/sugar (osmotic lysis)
- Radiation (non-ionizing (UV), DNA damage)
- Moist/Dry heat (protein denatures)
The use of UV to control microbial growth results in Pyrimidine dimers
which of the following lesions to DNA?
Which of the following will destroy bacterial - Steam under pressure (autoclave)
endospores? - Incineration
- Ethylene oxide gas
What does the term antibiotic mean? Antimicrobial agent specifically for bacterial infections
Which of the following methods is most suitable for Ozone is the best as it can damage the cell walls of bacteria (UV light is a bit
disinfection of a drinking water sample that is worse than ozone)
contaminated with chlorine-resistant pathogenic
bacteria?
What is the purpose of the Kirby-Bauer method? Also called the Disk Diffusion Test, tests the effectiveness of antibiotics against
bacteria (or the bacteria's sensitivity to antibiotics)
Epidemiologically speaking, a disease such as Malaria, Endemic
which is regularly and expectedly found among people
in sub-Saharan Africa, is considered
, Your patient suffers from septicemia; after isolation, you The best options would be the antibiotics that have the widest diameter or largest
order a Kirby Bauer test to determine which antibiotic is circle. The bigger the number, the more effective the antibiotic is.
the most appropriate for the treatment. Looking at the
figure below, which antibiotic is your first correct choice,
and which one is your second correct choice for treating
your patient?
Which of the following microorganisms, when causing an - Streptococcus pyogenes/pneumoniae
infection, can be treated with penicillin? - Bacillus anthracis
Which of the following categories of microorganisms' Fungi/Mold (Penicillium)
release penicillin?
Which of the following represents way(s) by which food - Improper handling during food processing, things like cross contamination with
provided to the public can be contaminated by harmful raw food
microbes? - Exposure to contaminates in soil, water, and mechanical vectors like flies and
roaches
- Improper storage: Moisture content, pH, temperature can affect spoilage
- Improper cooking temp
Organisms that grow in high salt concentrations are Halophiles
called?
Mannitol salt agar is an example of which type of media? Selective and Differential due to high salt (selective for halophiles) and ability to
ferment (differential)
Growth of rapid Lactose fermenting Gram-negative rods True
on Eosin-Methylene blue agar results in green sheen-
colored colonies
The presence of coliform bacteria in the water indicates Fecal
what type of contamination?
Why did Typhoid Mary refuse to accept that she was a Was asymptomatic
typhoid carrier?
The causative agent of Typhoid Mary's infection was a Salmonella enterica serotype Typhi (bacteria)
Which of the following enzymes in aerobic bacteria Catalase
detoxifies hydrogen peroxide by converting it to water
and oxygen?
Where in aerobic bacteria are the components of the Cytoplasmic membrane
electron transport chain located?
Using the oxidase reagent in oxidase-positive bacteria Due to reaction with cytochrome c, it'll turn dark purple/blue
will result in which color formation?
What does ELISA stand for? Enzyme Linked Immunosorbent Assay
