Agars

Question 1

Chocolate agar

Answer 1

H. influenzae

requires factors V (NAD) and X (hematin)

Question 2

agar that has vancomycin, polymyxin, and nystatin

Answer 2

Thayer-Martin for Neisseria species
vanco for G+
polymyxin for G- except Neisseria
nystatin for fungals

Question 3

Bordet-Gengou

Answer 3

Bordatella pertussis

potato agar

Question 4

Tellurite plate

Answer 4

C. diptheriae

Loffler’s agar

Question 5

Lowenstein-Jensen

Answer 5

M. tuberculosis

Question 6

Eaton’s agar

Answer 6

M. pneumoniae

Question 7

MacConkey’s

Answer 7

lactose-fermenting enterics

pink colonies form (fermenting produces acid)

Question 8

eosin-methylene blue (EMB)

Answer 8

E. coli

green metallic sheen

Question 9

charcoal yeast

Answer 9

Legionella

buffered with cysteine and iron

Question 10

Sabouraud’s

Answer 10

fungi