8. Family Mycobacteriaceae (II) Flashcards Preview

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Flashcards in 8. Family Mycobacteriaceae (II) Deck (22):
1

Colony morphology of M. avium complex

Tan to buff color
Smooth texture

2

Colony morphology of M. kansasii

Yellow or reddish yellow
Smooth texture

3

Pigment production; geows with a deep yellow pigment regardless of light

Scotochromogens

4

Pigment production; develops yellow pigment only after exposure to light

Photochromogens

5

Pigment production; no pigment beyond tan to buff colored colonies regardless of light

Nonchromogens

6

MOTT that are scotochromogens

M. scrofulaceum
M. gordonae

7

MOTT that are photochromogens

M. kansasii
M. marinum

8

MOTT that are nonchromogens

M. avium-intracellulare

9

Mycobacteria that are niacin positive

M. tuberculosis

10

Mycobacteria that are semi quantitative catalase negative

M. tuberculosis
M. avium complex

11

Mycobacteria that are nitrate reduction positive

M. tuberculosis
M. kansasii
M. fortuitum

12

Mycobacteria that are aryl sulfatase postive

M. fortuitum
M. gordonae (Variable)

13

Mycobacteria that are tween hydrol positive

M. kansasii
M. gordonae
M. fortuitum (Variable)

14

Preferred basic nonselective media for Mycobacteria

Lowenstein-Jensen (LJ)

15

What is added to the Lowenstein-Jensen media as inhibitory to contaminants?

Penicillin/Nalidixic acid

Gruft modification

16

Inhibitory to routine bacteria in Lowenstein-Jensen media

Malachite green

17

Most popular agar based media (in petri dish) for Mycobacteria

Middlebrook 7H10, 7H11

18

Most common liquid media for Mycobacteria

7H9

19

Growth rate of rapid growing Mycobacteria

20

Growth rate of slow growing Mycobacteria

> 7 days

21

Test used to differentiate Mycobacteria from Nocardia

Arylsulfatase

22

Colony morphology of M. tuberculosis

Buff color
Rough texture