Article 2: Major Groups of Disease-Causing Bacteria (Worksheet) Flashcards Preview

Microbiology Exam 1 > Article 2: Major Groups of Disease-Causing Bacteria (Worksheet) > Flashcards

Flashcards in Article 2: Major Groups of Disease-Causing Bacteria (Worksheet) Deck (18):
1

Gram Positive Cocci: 3 main species

Staphylococcus, Streptococcus, Enterococcus

See "-coccus" think "Cocci"

2

Positive vs Negative Catalase Test

Positive: Staphylococcus

Negative: Streptococcus or Enterococcus

3

Positive vs Negative Coagulase Test

Positive: Staphylococcus aureus

Negative: (Novobiocin Test needed)

4

Positive vs Negative Novobiocin Test

Positive (i.e. Sensitive): Staphylococcus epidermidis

Negative (i.e. Resistant): Staphylococcus saprophyticus

5

Hemolysis on Blood Agar Test (either Streptococcus or Enterococcus species, at this point)

Alpha: (Optochin sensitivity test needed)

Beta: (Bacitracin sensitivity test needed)

Gamma: Enterococcus Species

6

Sensitive vs Resistant Optochin Sensitivity Test

Sensitive: Streptococcus pneumoniae

Resistant: Enterococcus species

7

Sensitive vs Resistant Bacitracin Sensitivity Test

Sensitive: Streptococcus pyogenes

Resistant: Streptococcus agalactiae

8

Gram Positive Rods: 2 subcategories and 4 species

Anaerobic Spore-Forming:
-Clostridium

Aerobic:
-Bacillus
-Listeria
-Corynebacterium

9

Positive vs Negative Anaerobic Growth Test

Positive: Clostridium species

Negative: (Spore formation test needed)

10

Positive vs Negative Spore Formation Test

Positive or Negative: (Motility Test needed)

11

Positive vs Negative Motility Test with a Positive Spore Formation Test

Positive: Bacillus cereus

Negative: Bacillus anthracis or Bacillus cereus

12

Positive vs Negative Motility Test with a Negative Spore Formation Test

Positive: Listeria monocytogenes

Negative: Corynebacterium diptheriae

13

Gram Negative Rods: Enterobacteriaceae Family

Esterichieae coli
Klebsiella pneumoniae
Salmonella enterica
Salmonella typhi
Proteus species
Shigella species
Yersinia pestis

14

Positive vs Negative Lactose Fermentation Test

Positive: Esterichieae coli or Klebsiella pneumoniae

Negative: (H2S Production Test/Motility Test needed)

15

Positive vs Negative H2S Production Test/Motility Test

Positive: Salmonella enterica, Salmonella thyphi, or Proteus species

Negative: Yersinia pestis or Shigella species

16

Gram Negative Cocci: Neisseria Species

Neisseria meningitidis or Neisseria gonorrheae

17

Positive vs Negative Maltose Test

Positive: Neisseria meningitidis

Negative: Neisseria gonorrheae

18

Which bacteria are not usually gram stained and why? (4 of them from worksheet)

Mycoplasmas (Lack of cell wall)
Mycobacteria (Acid fast staining)
Chlamydia and Chlamydophila (Obligate parasite)
Borrelia (Wright's staining)