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Microbiology > Major Groups of Disease Causing Bacteria- RA2 > Flashcards

Major Groups of Disease Causing Bacteria- RA2 Flashcards

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Biology 101 flashcards
1
Q

Aerobic Gram (+) Rods

A

Bacillus (Forms spores)
Cornyebacterium (Chinese Characters)
Listeria

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2
Q

Anaerobic Spore-Forming Gram (+) Rods

A

Clostridium (Forms spores & some species have tennis racket appearance)

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3
Q

Gram (+) Cocci

A

Staphylococcus
Streptococcus
Enterococcus

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4
Q

Enteric Gram (-) Rods

A 
Escherichia 
Campylobacter 
Yernisia enterocolitica 
Salmonella 
Shingella 
Helicobacter 
Vibrio 
Bacteroides
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5
Q

Non-enteric Gram (-) Rods

A 
Haemophilus 
Legionella 
Francisella 
Pasteurella 
Brucella 
Rickettsia 
Pseudomonas 
Klebseilla 
Yernisia pestis
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6
Q

Gram (-) Cocci

A

Neisseria

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7
Q

Elementary/ Reticulate Body

A

Chlamydia

Chlamydophila

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8
Q

Spirochetes

A

Borrelia

Treponema

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9
Q

No Cell-Wall

A

Mycoplasma

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10
Q

Unique Cell Wall

A

Mycobacterium

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11
Q

Which Gram (+) cocci are catalase (+) & which are catalase (-)?

A

Staphylococcus is Catalase (+)

Streptococcus & Enterococcus are Catalase (-)

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12
Q

You are attempting to classify a Gram (+) cocci & have determined it to be Catalase (+). What type of Gram (+) Cocci is this? What is the next step?

A
  • Staphylococcus

- Coagulase Test

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13
Q

What will the a positive Coagulase Test tell you?

A

Positive= staphylococcus aureus

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14
Q

The Gram (-) Cocci in question is Coagulase negative. What is the next step?

A

Novobiocin Test

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15
Q

What will the Novobiocin Test tell you?

A 
Sensitive= Staphylococcus epidermidis 
Resistant= Staphylococcus saprophyticus
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16
Q

You are attempting to classify a Gram (+) cocci & have determined it to be Catalase (-). What type of Gram (+) Cocci could this be?

A

Either Streptococcus or Enterococcus

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17
Q

What is the next step after determining that the Gram (+) Cocci is Catalase (-)?

A

Hemolysis on Blood Agar Test

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18
Q

What are the three possible results of a Hemolysis on Blood Agar Test?

A

Alpha
Beta
Gamma

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19
Q

The Gram (+) Cocci is gamma on the Hemolysis on Blood Agar Test. What do you now know?

A

This is an Enterococcus species

20
Q

After determining that the Gram (+) Cocci in question is alpha on Hemolysis on Blood Agar Test, what is the next step?

A

Optochin Sensitivity Test

21
Q

What species is sensitive on Optochin Sensitivity Test?

A

Streptococcus pneumoniae

22
Q

What species is resistant on Optochin Sensitivity Test?

A

Enterococcus species

23
Q

After determining that the Gram (+) Cocci in question is beta on Hemolysis on Blood Agar Test, what is the next step?

A

Bacitracin Sensitivity Test

24
Q

What species is sensitive on Bacitracin Sensitivity Test?

A

Streptococcus pyogens

25
Q

What species is resistant on Bacitracin Sensitivity Test?

A

Streptococcus agalactiae

26
Q

You are attempting to determine the genera of a Gram (+) Rod. You perform the Anaerobic Growth Test & it is positive. What is the bacterium?

A

Clostridium species

27
Q

You are attempting to determine the genera of a Gram (+) Rod. You perform the Anaerobic Growth Test and it is negative. What is the next step?

A

Spore Formation Test

28
Q

A Gram (+) Rod is Anaerobic Growth Test (-). You perform the Spore Formation Test & it is positive. What genera must this bacterium be?

A

Bacillus

29
Q

How would you differentiate between Bacillus species if a spore formation test was positive?

A

Motility Test

30
Q

A Gram (+) Rod is Anaerobic Growth Test (-), Spore Formation Test (+), & Motility Test (+). What species is it?

A

Bacillus cereus

31
Q

A Gram (+) Rod is Anaerobic Growth Test (-) & Spore Formation Test (-). What genera could it be?

A

Listeria or Corynebacterium

32
Q

A Gram (+) Rod is Anaerobic Growth Test (-) & Spore Formation Test (-). How would you determine what species it is?

A

Motility Test

33
Q

A Gram (+) Rod is Anaerobic Growth Test (-) & Spore Formation Test (-). You perform the Motility Test & it is positive. What bacteria is this?

A

Listeria monocytogenes

34
Q

A Gram (+) Rod is Anaerobic Growth Test (-) & Spore Formation Test (-). You perform the Motility Test & it is negative. What bacteria is this?

A

Corynebacterium diptheriae

35
Q

A Neisseria species is Maltose Test (+). What species is it?

A

Neisseria meningitidis

36
Q

A Neisseria species is Maltose Test (-). What species is it?

A

Neiseria gonorrhoeae

37
Q

You are attempting to classify Enteric Gram (-) Rods. What is the first test that you should perform?

A

Lactose Fermentation Test?

38
Q

You are attempting to classify Enteric Gram (-) Rods & perform a Lactose Fermentation Test, which is positive. What could this bacteria be?

A

Escherichieae coli

Klebsiella pneumoniae*

39
Q

You are attempting to classify Enteric Gram (-) Rods & perform a Lactose Fermentation Test, which is negative. What is the next step?

A

H2 Production Test/ Motility Test

40
Q

You are attempting to classify Enteric Gram (-) Rods & perform a Lactose Fermentation Test; the test is negative. Next you perform a H2 Production Test/Motility Test, which is positive. What bacteria could is this be?

A

Salmonella enterica
Salmonella typhi
Proteus species

41
Q

You are attempting to classify Enteric Gram (-) Rods & perform a Lactose Fermentation Test; the test is negative. Next you perform a H2 Production Test/Motility Test, which is negative. What bacteria could is this be?

A

Shigella species

Yernisia pestis*

42
Q

Chlamydia & Chlamydophila

A

Obligate parasites

43
Q

Borrelia

A

Wright’s Staining

44
Q

Mycobacteria

A

Acid Fast Staining

45
Q

Mycoplasma

A

Lack cell wall

Microbiology (49 decks)

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