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Microbiology > Chapter 21: Nonfermenting gram-Negative Bacilli > Flashcards

Chapter 21: Nonfermenting gram-Negative Bacilli Flashcards

Exam 3

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Biology 101 flashcards
1
Q

Organisms that ferment carbohydrates

A

fermenters

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2
Q

Organisms that do not ferment carbohydrates

A

Nonfermenters

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3
Q

Nonfermenters prefer what type of environment

A

Moist environment

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4
Q

Nonfermenters prefer and grow much better in what kind of environment?

A

Aerobic environment

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5
Q

Is nonfermenting or fermenting are long thin gram-negative bacilli

A

Nonfermenting

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6
Q

Is nonfermenting or fermenting tend to be resistant to multiple classes of antibiotics

A

Nonfermenting

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7
Q

Most group members are oxidase-positive

A

Nonfermenting

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8
Q

Asaccharolytic

A

Do not break down carbohydrates

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9
Q

Nonfermenting fail or acidify oxidative fermintative (OF) media when overlaid with mineral oil

A

Fail to acidify

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10
Q

Oxidation

A

Utilize carbohydrates aerobically

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11
Q

Fermentation

A

Utilize carbohydrates anaerobically

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12
Q

Asaccharolytic

A

Do not utilize carbohydrates

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13
Q

This test determines the ability of a bacteria to ferment a specific carbohydrate incorporated into a basal medium

A

Carbohydrate fermentation test

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14
Q

Only open tube that produces acid (oxidizer)

A

Aerobic tube for O/F basal media

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15
Q

Only closed tube produces acid (fermenter)
Overlaid with sterile mineral oil

A

Anaerobic tube for O/F basal media

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16
Q

This bacteria accounts for largest percentage of all nonfermenters isolated from clinical specimens

A

Pseudomonas but is also called pseudomonads

17
Q

This bacteria is the leading cause of nosocomial respiratory tract infections

A

P. aeruginosa

18
Q

What is the hemolytic on pseudomonas aeruginosa on sheep blood agar

A

Beta-hemolytic

19
Q

What odor will Pseudomonas aeruginosa have

A

fruity, grapelike odor

20
Q

True or false: Pseudomonas aeruginosa is resistant to many antimicrobial agents

A

True

21
Q

Wrinkled, leathery, adherent colonies that may produce a light yellow or brown pig

A

P. stutzeri

22
Q

A member of the family moraxellaceae

A

Acinetobacter

23
Q

Has a purplish hue and may resemble of a lactose-fermenting bacterium

A

Acinetobacter

24
Q

The third most common nonfermentative gram negative bacilius

A

Stenotrophomonas maltophilia

25
Q

Colonies may appear bluish on MAC agar

A

Stenotrophomonas maltophilia

Microbiology (5 decks)

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