Major Groups of Disease Causing Bacteria- RA2 Flashcards Preview

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Flashcards in Major Groups of Disease Causing Bacteria- RA2 Deck (45):
1

Aerobic Gram (+) Rods

Bacillus (Forms spores)
Cornyebacterium (Chinese Characters)
Listeria

2

Anaerobic Spore-Forming Gram (+) Rods

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

3

Gram (+) Cocci

Staphylococcus
Streptococcus
Enterococcus

4

Enteric Gram (-) Rods

Escherichia
Campylobacter
Yernisia enterocolitica
Salmonella
Shingella
Helicobacter
Vibrio
Bacteroides

5

Non-enteric Gram (-) Rods

Haemophilus
Legionella
Francisella
Pasteurella
Brucella
Rickettsia
Pseudomonas
Klebseilla
Yernisia pestis

6

Gram (-) Cocci

Neisseria

7

Elementary/ Reticulate Body

Chlamydia
Chlamydophila

8

Spirochetes

Borrelia
Treponema

9

No Cell-Wall

Mycoplasma

10

Unique Cell Wall

Mycobacterium

11

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

Staphylococcus is Catalase (+)
Streptococcus & Enterococcus are Catalase (-)

12

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?

- Staphylococcus
- Coagulase Test

13

What will the a positive Coagulase Test tell you?

Positive= staphylococcus aureus

14

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

Novobiocin Test

15

What will the Novobiocin Test tell you?

Sensitive= Staphylococcus epidermidis
Resistant= Staphylococcus saprophyticus

16

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

Either Streptococcus or Enterococcus

17

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

Hemolysis on Blood Agar Test

18

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

Alpha
Beta
Gamma

19

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

This is an Enterococcus species

20

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

Optochin Sensitivity Test

21

What species is sensitive on Optochin Sensitivity Test?

Streptococcus pneumoniae

22

What species is resistant on Optochin Sensitivity Test?

Enterococcus species

23

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

Bacitracin Sensitivity Test

24

What species is sensitive on Bacitracin Sensitivity Test?

Streptococcus pyogens

25

What species is resistant on Bacitracin Sensitivity Test?

Streptococcus agalactiae

26

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

Clostridium species

27

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?

Spore Formation Test

28

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

Bacillus

29

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

Motility Test

30

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

Bacillus cereus

31

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

Listeria or Corynebacterium

32

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

Motility Test

33

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

Listeria monocytogenes

34

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

Corynebacterium diptheriae

35

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

Neisseria meningitidis

36

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

Neiseria gonorrhoeae

37

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

Lactose Fermentation Test?

38

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

Escherichieae coli
Klebsiella pneumoniae*

39

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

H2 Production Test/ Motility Test

40

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?

Salmonella enterica
Salmonella typhi
Proteus species

41

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?

Shigella species
Yernisia pestis*

42

Chlamydia & Chlamydophila

Obligate parasites

43

Borrelia

Wright's Staining

44

Mycobacteria

Acid Fast Staining

45

Mycoplasma

Lack cell wall

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