Bacteriology Quiz
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Microorganisms that can be found thriving in icy-cold climates would be considered….
A. barophiles
B. thermophiles
C. mesophiles
D. psychrophiles
E. bibliophil
An obligate halophiles requires high
A. pH
B. temperature
C. salt
D. pressure
which of the following is false about differential staining method of bacteria ?
A. allows cells to be divided in various groups
B. requires use of two or more staining
C. example is gram staing
D. also called simple staining
Which type of bacteria causes pneumonia?
A. Bacilli
B. Staphylococci
C. Diplococci
D. Streptococci
ziehl-neelson stain is an example of ?
A. methylene blue
B. gram staining
C. acid fast staining
D. none
Bacteria multiply best in cool, bright, dry places.
A. TRUE
B. FALSE
what of the following is true about methylene blue ?
A. involves only one step to stain bacteria
B. used in simple staining method
C. used for bacterial staining
D. all are correct
Lice and mites cause what type of disease?
A. Pathogenic
B. Parasitic
C. Systemic
D. Viral
which microbe would you most likely find in large number in an extremely hypertonic salty
A. Mycobacterium
B. Bacillus
C. Staphylococcus
D. Halobacterium salinarum
E. Salmonella
Porins are present in the
A. Cell wall
B. Cytoplasmic membrane
C. Outermembrane
D. Periplasm
gram staining is done on which of the following ?
A. cell wall difference
B. cytoplasm of bacteria
C. virulence of bacteria
D. pathogenecity of bacteria
Which of the following is a site of CO2 fixation?
A. Carbonosomes
B. Sulfur storage granules
C. Carboxysomes
D. Gas Vacuoles
crystal violet during gram staining of bacteria is retained in ?
A. gram positive
B. gram negative
C. ziehl neelson stain
D. none of the above
The generation time of a culture that produces two generations per hour is
A. greater than that produce three generations per hour
B. lesser than that produces three generations per hour
C. equal to that produces three generation per hour
D. none of the above
what is the term (bacterial growth curve) used for the phase in which bacteria die and do not divide ?
A. log phase
B. lag phase
C. death phase
D. exponential phase
Staph bacteria can be picked up on doorknobs, countertops, and other surfaces.
A. TRUE
B. FALSE
Example of aerobic bacteria ?
A. bacillus cereus
B. clostridium perfringens
C. clostridium botulinum
D. all of the above
Which of the following is assembled first during flagellar assembly?
A. L ring
B. P ring
C. MS ring
D. HAP2 (Cap protein)
Contact with broken skin, blood, body fluid, or other potentially infectious materials as a result of the performance of employee duties is known as:
A. Infectious disease
B. Decontamination
C. Exposure incident
D. Inflammation
identify ?
A. acid fasting staning
B. gram negative
C. gram positive
D. meethylene blue staining
what do you understand by stationary phase of bacteria growth curve ?
A. bacteria grow in size
B. bacteria death rate is more than growth rate
C. bacteria divide exponentially
D. growth rate and death rate are equal
Which of the following about plasmid is false?
A. Plasmid are mostly circular
B. They encode for only a few genes
C. They are not essential for the bacteria.
D. All plasmid can be integrated into the chromosomes
Head lice are a type of parasite responsible for contagious diseases and conditions
A. TRUE
B. FALSE
Time required by the cell to undergo binary fission is called the:
A. exponential growth rate
B. growth curve
C. generation time
D. lag period
E. stationary phase
An organism that expands energy to grow in a habitat with a low water activity in order to maintain internal solute concentration to retain water is
A. osmotolerant
B. acidophile
C. aerotolerant anaerobic
D. alkalophile
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