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Elsevier Bacteriology (RVSP) > 8. Family Mycobacteriaceae (II) > Flashcards

8. Family Mycobacteriaceae (II) Flashcards

1
Q

Colony morphology of M. avium complex

A

Tan to buff color

Smooth texture

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2
Q

Colony morphology of M. kansasii

A

Yellow or reddish yellow

Smooth texture

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3
Q

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

A

Scotochromogens

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4
Q

Pigment production; develops yellow pigment only after exposure to light

A

Photochromogens

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5
Q

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

A

Nonchromogens

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6
Q

MOTT that are scotochromogens

A

M. scrofulaceum

M. gordonae

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7
Q

MOTT that are photochromogens

A

M. kansasii

M. marinum

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8
Q

MOTT that are nonchromogens

A

M. avium-intracellulare

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9
Q

Mycobacteria that are niacin positive

A

M. tuberculosis

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10
Q

Mycobacteria that are semi quantitative catalase negative

A

M. tuberculosis

M. avium complex

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11
Q

Mycobacteria that are nitrate reduction positive

A

M. tuberculosis
M. kansasii
M. fortuitum

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12
Q

Mycobacteria that are aryl sulfatase postive

A

M. fortuitum

M. gordonae (Variable)

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13
Q

Mycobacteria that are tween hydrol positive

A

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

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14
Q

Preferred basic nonselective media for Mycobacteria

A

Lowenstein-Jensen (LJ)

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15
Q

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

A

Penicillin/Nalidixic acid

Gruft modification

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16
Q

Inhibitory to routine bacteria in Lowenstein-Jensen media

A

Malachite green

17
Q

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

A

Middlebrook 7H10, 7H11

18
Q

Most common liquid media for Mycobacteria

A

7H9

19
Q

Growth rate of rapid growing Mycobacteria

A
20
Q

Growth rate of slow growing Mycobacteria

A

> 7 days

21
Q

Test used to differentiate Mycobacteria from Nocardia

A

Arylsulfatase

22
Q

Colony morphology of M. tuberculosis

A

Buff color

Rough texture

Elsevier Bacteriology (RVSP) (34 decks)

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