Microbiology: The Final Jam DVD Extras

Question 1

Legionella spp. is a(n) _____ _____ microbe.

Answer 1

Facultative intracellular

Question 2

What is the morphology of Bordatella pertussis?
What does it cause?
What does Bordatella bronchioseptica cause?

Answer 2

Gram- coccobacillus
Whooping cough
Kennel cough

Question 3

What are the three stages of whooping cough?

Answer 3

Catarrhal
Paroxysmal
Convalescent

Question 4

Which species is responsible for a less severe form of whooping cough?

Answer 4

Bordatella parapertussis

Question 5

Haemophilus ducreyi is often confused with _____.

Why?

Answer 5

Treponema pallidum / syphilis

Both are G- curved rods

Question 6

What is contained within TSI?

In TSI slants, why do Salmonella and Shigella have a yellow butt after 18 - 24 hours?

Answer 6

Glu Suc Lac (and Phenyl red pH indicator)

There is no oxygen to oxidize peptones, and they cannot ferment lactose and sucrose.

Question 7

What is used to treat H. ducreyi?

Answer 7

Macrolides (azithromycin) which inhibit protein synthesis

Question 8

Which enterobacteriaceae is oxidase positive?

Answer 8

Plesiomonas (Also DNAse-)

Question 9

Erysipelothrix is:
A Gram _____ non _____.
Catalase _____.
H2S _____.

Answer 9

positive, non-spore former
catalase-
H2S producer on TSI

Question 10

Why are Mycobacteria responsive to acid-fast staining?

Answer 10

Mycobacteria’s high lipid cell wall content more easily binds fuchsin dye & resists destaining by acid alcohols