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Apollon Bacteriology Study Set Exam
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Apollon Bacteriology Study Set Exam3. Capsules can be used for
a. complement fixation test
b. hemagglutination test
c. serotyping by swelling
d. precipitation test - Answer c. serotyping by swelling
4. To demonstrate capsules, grow the culture on media containing
a. antibiotics
b. milk
c. serum
d. b and c - Answer d. b and c
5. The Quellung test depends on the antigenic specificity of the
a. nucleus
b. cell wall
c. flagella
d. capsule - Answer d. capsule
6. Dark staining granules are called
a. spores
b. capsules
c. cysts
d. metachromatic - Answer d. metachromatic
7. Organisms that vary in size and shape are referred to as
a. psychrophilic
b. thermophilic
c. palisades
d. pleomorphic - Answer d. pleomorphic
,8. In the bacterial growth cycle, growth ceases because nutrients are exhausted or
toxic metabolic products have accumulated in the
a. stationary phase
b. logarithmic phase
c. lag phase
d. a and b - Answer a. stationary phase
9. Which genera of bacteria form spores?
a. Corynebacterium
b. Bacillus
c. Clostridium
d. b and c - Answer d. b and c
10. Bacteria that grow in the absence of atmospheric (free) oxygen and obtain oxygen
from oxygen-containing compounds are called
a. anaerobes
b. aerobes
c. capnophiles
d. aerotolerant - Answer a. anaerobes
11. The temperature at which bacteria grow best is known as
a. thermophilic
b. psychrophilic
c. optimum
d. mesophilic - Answer c. optimum
12. A slimy colony on blood agar medium indicates which of the following
characteristics may be present?
a. blood agar is too old
b. organism has a capsule
c. plate was incubated too long
d. plate was incubated at too high a temperature - Answer b. organism has a capsule
,13. On blood agar plates a small zone of alpha-hemolysis surrounded by a zone of
beta-hemolysis after refrigeration is known
a. gamma-hemolysis
b. beta-hemolysis
c. alpha-hemolysis
d. alpha-prime hemolysis - Answer d. alpha-prime hemolysis
14. When using fractional sterilization the sequence is
a. heating (kills vegetative bacteria)
b. incubation (spores germinate)
c. heating (kills remaining vegetative bacteria)
d. all of the above - Answer d. all of the above
15. What is the most effective method of sterilization
a. autoclave
b. dry heat oven
c. boiling
d. disinfection - Answer a. autoclave
16. Which of the following is used for quality control for the dry heat oven?
a. Bacillus subtilis
b. Bacillus stearothermophilus
c. Staphylococcus aureus
d. Salmonella typhi - Answer a. Bacillus subtilis
17. Which of the following filters can give 100% sterility?
a. Seitz
b. Millipore (0.22 um)
c. Millipore (0.5 um)
d. a and b - Answer b. Millipore (0.22 um)
18. Media that cannot be heated can be sterilized by
, a. filtration
b. chemical disinfectants
c. antiseptics
d. cannot be sterilized - Answer a. filtration
19. Which of the following is not a disinfectant?
a. phenol
b. 70% alcohol
c. quaternary ammonium (“quatsâ€)
d. 2% aqueous glutaraldehyde - Answer b. 70% alcohol
20. Iodophores are composed of iodine and
a. a phenolic compound
b. a detergent
c. 70% alcohol
d. 90 to 95% alcohol - Answer b. a detergent
21. Quaternary ammonium disinfectants are easily inactivated by
a. heat
b. Pseudomonas aeruginosa
c. organic material
d. tap water - Answer c. organic material
22. What is a term that describes a process or treatment that renders a medical device,
instrument, or environmental surface safe to handle?
a. decontamination
b. antisepsis
c. disinfectant
d. sterile - Answer a. decontamination
23. What color do gram positive bacteria stain?
a. purple
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