Bacteriology - Mycobacteria Quiz
Mycobacterium is a genus of Actinobacteria and comes from a group, which includes the causative agents for leprosy and tuberculosis. MTB is not classified as either Gram-positive or Gram-negative because it does not have the chemical characteristics of either. Take up the quiz below and see what you know about them.
- 1.Mycobacteria are motile and can produce spores
- A.
True
- B.
False
- 2.Mycobacteria are what?
- A.
Thin, hook or slight bent cocci
- B.
Thick, straight
- C.
Thin, straight or slightly curved rods
- 3.Cell wall has a high what?
- A.
Protein content
- B.
Lipid content
- C.
Glucose content
- 4.Mycobacteria resist decolorization with acid alcohol
- A.
True
- B.
False
- 5.Are mycobacteria strictly aerobic or anaerobic?
- A.
Aerobic
- B.
Anaerobic
- 6.Mycobacteria tend to do what compared to other pathogenic bacteria?
- A.
Grow faster
- B.
Grow slowly
- 7.Most rapidly growing species of mycobacteria will grow in less than how many days?
- A.
14
- B.
3
- C.
7
- 8.Most rapidly growing species of mycobacteria grow at temperatures ______ degrees celsius
- A.
10-30
- B.
20-40
- C.
40-60
- 9.Most mycobacteria associated with disease will grow in _______ weeks.
- A.
2-6
- B.
8-12
- C.
1-4
- 10.M.leprae will not grow on artificial media
- A.
True
- B.
False
- 11.The Mycobacteria lab should be separated from the rest of the microbacteriology lab
- A.
True
- B.
False
- 12.Areas where specimens and cultures are processed should have _____ air pressure.
- A.
Positive
- B.
Negative
- 13.A biological safety cabinet is not essential for a mycobacteria lab.
- A.
True
- B.
False
- 14.UV light does what to bacteria?
- A.
No effect
- B.
Kills them
- C.
Nurtures them
- 15.Mycobacteria be cultured from a variety of clinical specimens, the most common being ______ specimens.
- A.
Urinary
- B.
Respiratory
- C.
Stool
- 16.If immediate transport is not possible for Mycobacteria specimens what should be done?
- A.
Refrigerate the specimens
- B.
Leave them out in room temperature
- C.
Place in an anaerobic jar
- D.
Store in a incubator at 37 degrees celsius
- 17.Delay in specimen processing can lead to what?
- A.
False negatives
- B.
False positives
- 18.Swabs can be used for sputum specimens.
- A.
True
- B.
False
- 19.How many specimens of sputum is typically needed to make a diagnosis?
- A.
3
- B.
5
- C.
2
- D.
1
- 20.A volume of _____ ml sputum should be sent.
- A.
5-10
- B.
15-20
- C.
20-30
- D.
2-3
- 21.Gastric Aspirates are used primarily by
- A.
Children < 3 years of age
- B.
Nonambulatory people
- C.
Those who cannot produce sputum by induction
- D.
Those who can produce sputum by induction
- 22.Gastric aspirates are collected in the morning after an overnight fast. How many specimens are collected within 3 days?
- A.
3
- B.
1
- C.
2
- D.
4
- 23.Urine is usually used to diagnose Renal TB. First morning midstream specimen is preferred; minimum volume is ____ ml
- A.
10
- B.
5
- C.
15
- D.
20
- 24.No AF smear is performed with Urine specimens.
- A.
True
- B.
False
- 25.No AF smear is preformed with Stool specimens.
- A.
True
- B.
False
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