Micro Final Agar Pictorial Review

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Last updated 12:51 PM on 8/13/26
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28 Terms

1
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staphylococcus aureus

What organism is associated with Mannitol Salt Agar?

<p>What organism is associated with Mannitol Salt Agar?</p>
2
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presence of salt

Why is Mannitol Salt Agar selective for Staphylococcus?

3
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- presence of mannitol

- allows differentiation based on fermentation.

Why is Mannitol Salt Agar differential?

<p>Why is Mannitol Salt Agar differential?</p>
4
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- skin

- nose

- fomites

What are common sources of Staphylococcus aureus?

<p>What are common sources of Staphylococcus aureus?</p>
5
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staphylococcus epidermis

Which Staphylococcus species cannot ferment mannitol?

<p>Which Staphylococcus species cannot ferment mannitol?</p>
6
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complete

What type of hemolysis would you expect if a sample is believed to be Staphylococcus aureus on blood agar?

<p>What type of hemolysis would you expect if a sample is believed to be Staphylococcus aureus on blood agar?</p>
7
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streptococcus pyogenes

If a throat swab produces beta hemolysis on blood agar, what organism is most likely?

<p>If a throat swab produces beta hemolysis on blood agar, what organism is most likely?</p>
8
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it contains 5% blood

Why is blood agar considered complex media?

9
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incomplete hemolysis

What type of hemolysis is described for a sample believed to be Staphylococcus aureus that is seen in this photo?

<p>What type of hemolysis is described for a sample believed to be Staphylococcus aureus that is seen in this photo?</p>
10
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no

Does Staphylococcus epidermidis hemolyze blood?

<p>Does Staphylococcus epidermidis hemolyze blood?</p>
11
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- streptococcus viridans

- streptococcus pneumoniae

If a throat sample shows alpha hemolysis, what organisms might it be?

<p>If a throat sample shows alpha hemolysis, what organisms might it be?</p>
12
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E. coli

What organism is associated with a green sheen on EMB agar?

<p>What organism is associated with a green sheen on EMB agar?</p>
13
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enteric organisms

What is EMB agar selective for?

<p>What is EMB agar selective for?</p>
14
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prescence of methylene blue dye

What makes EMB agar selective for enteric organisms?

<p>What makes EMB agar selective for enteric organisms?</p>
15
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assorted enteric organsism

What types of organisms will grow on MacConkey agar?

<p>What types of organisms will grow on MacConkey agar?</p>
16
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enteric organisms

What is MacConkey agar selective for?

<p>What is MacConkey agar selective for?</p>
17
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presence of bile salts

What makes MacConkey agar selective for enteric organisms?

<p>What makes MacConkey agar selective for enteric organisms?</p>
18
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fungi

What is Sab Dextrose Agar selective for?

<p>What is Sab Dextrose Agar selective for?</p>
19
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presence of sugar and acid

Why is Sab Dextrose Agar selective for fungi?

<p>Why is Sab Dextrose Agar selective for fungi?</p>
20
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prefer neutral or slightly alkaline conditions

Why will bacteria rarely grow on Sab Dextrose Agar?

<p>Why will bacteria rarely grow on Sab Dextrose Agar?</p>
21
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slimy

What do yeast colonies look like on Sab Dextrose Agar?

<p>What do yeast colonies look like on Sab Dextrose Agar?</p>
22
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fuzzy or hairy

What do mold colonies look like on Sabouraud Dextrose Agar?

<p>What do mold colonies look like on Sabouraud Dextrose Agar?</p>
23
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efficacy of antibiotics and/or antiseptics/disinfectants

What is the Kirby-Bauer test used to measure?

<p>What is the Kirby-Bauer test used to measure?</p>
24
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- area of non-growth around the antimicrobial

- indicates susceptibility

What is the zone of inhibition?

<p>What is the zone of inhibition?</p>
25
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millimeters

What unit is used to measure the zone of inhibition?

26
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staphylococcus aureus

What is Chromagar MRSA II selective for?

<p>What is Chromagar MRSA II selective for?</p>
27
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methicillin-resistant staphylococcus aureus

What is Chromagar MRSA II differential for?

<p>What is Chromagar MRSA II differential for?</p>
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reddish or mauve pigment

What color do MRSA colonies appear on Chromagar MRSA II?

<p>What color do MRSA colonies appear on Chromagar MRSA II?</p>