10. Fungus-like Bacteria Flashcards Preview

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Flashcards in 10. Fungus-like Bacteria Deck (45):
1

Minor genera that are fungus-like bacteria

Rhodococcus
Actinomadura
Nocardiopsis

2

Anaerobic fungus-like bacteria

Actinomyces

3

Aerobic fungus-like bacteria

Nocardia
Streptomyces

4

Fungus-like bacteria that stains partially acid-fast

Nocardia

5

Produced by all fungus-like bacteria

Granules

6

Oxygen requirement of Actinomyces spp.

Obligate aerobe

7

Gram-reaction of Actinomyces spp.

Gram positive

8

Fungus-like bacteria that produces yellow sulfur granules

Actinomyces spp.

9

Most common Actinomyces spp.

Actinomyces israelii

10

Most common Nocardia spp.

Nocardia asteroides

11

Nocardia spp. most important in tropical areas

Nocardia brasiliensis

12

Disease caused by Nocardia spp.

Nocardiosis

13

Gram reaction of Nocardia spp.

Gram variable

14

Acid fast reaction of Nocardia spp.

Modified acid-fast bacilli positive

15

Oxygen requirements of Nocardia spp.

Strictly aerobic

16

Filamentous and branching seen on microscope

Nocardia spp.

17

Nocardia colonies usually form within _______, but may require up to __________

4 days; 2-4 weeks

18

Has "moldlike" colonies

Nocardia spp.

19

Has a distinct strong mildew odor

Nocardia spp.

20

Has a gram-variable or "beaded" appearance

Nocardia spp.

21

Describe the "beaded" appearance of Nocardia spp.

Alternating gram-positive and gram-negative segments along a filament

22

What is the appearance of Nocardia spp. under suboptimal conditions?

Uniformly gram-negative

23

Acid fast stains for Nocardia spp.

- Modified Ziehl-Neelsen
- Kinyoun acid-fast stain

24

Used to differentiate Nocardia spp. and other aerobic actinomycetes

Tap water agar morphology

25

Appearance of Nocardia spp. on tap water agar

Has branching hyphae with aerial hyphae

26

Differentiate N. asteroides and N. brasiliensis based on biochemical characteristics

N. brasiliensis: hydrolyzes casein and tyrosine
N. asteroides: does not hydrolyze casein, xanthine, or tyrosine

27

A soil saprophyte associated with domestic farm animals

Rhodococcus equi

28

Colonies of R. equi form in

2-4 days

29

Gram reaction of R. equi

Gram-positive coccobacillus

30

Has glistening, smooth, pink to red colonies

R. equi

31

Sometimes partially acid-fast

R. equi

32

Biochemical characteristics of R. equi

Does not hydrolyze casein, tyrosine, or xanthine

33

Has a musty smell

Streptomyces spp.

34

Streptomyces spp. found in soil

Streptomyces griseus

35

Aerial, tertiary branching on tap water agar

Streptomyces spp.
Actinomadura spp.

36

Streptomyces spp. form colonies within

3-5 days at 35°C

37

Gram reaction of Streptomyces spp.

Gram-positive filamentous bacilli

38

Biochemical characteristics of Streptomyces spp.

Hydrolyzes casein and tyrosine

39

2 common Actinomadura spp.

Actinomadura madurae
Actinomadura pelletieri

40

Disease caused by Actinomadura spp.

Mycetoma

41

Gram reaction of Actinomadura spp.

Gram-positive filamentous bacilli

42

Biochemical characteristics of Actinomadura spp.

Hydrolyzes casein and tyrosine

43

Fungus-like bacteria that is thermotolerant

Nocardiopsis spp.

44

Causes a very rare case of mycetoma

Nocardiopsis spp.

45

3 major genera that are fungus-like bacteria

Actinomyces
Nocardia
Streptomyces