Microbiology

Question 1

All bacteria have cell walls composed of peptidoglycan EXCEPT

Answer 1

Mycoplasma pneumoniae

Question 2

All gram-positive bacteria have NO endotoxin EXCEPT

Answer 2

Listeria monocytogenes

Question 3

All bacterial capsules are composed of polysaccharides EXCEPT

Answer 3

Bacillus anthracis

Question 4

All exotoxins are heat-labile EXCEPT

Answer 4

Staphylococcal enterotoxin

Question 5

Clostridium perfringens media

Answer 5

Egg yolk

Question 6

Corynebacteriym diphtheriae media

Answer 6

Tellurite

Question 7

Grp D streptococci media

Answer 7

Bile esculin

Question 8

Media for N meningitidis, N gonorrhoeae from sterile sites

Answer 8

Chocolate

Question 9

Media for N gonorrhoeae from nonsterile sites

Answer 9

Thayer-Marten

Question 10

H influenzae media

Answer 10

Chocolate + factors X and V

Question 11

Lowenstein-jensen

Answer 11

Mycobacterium tuberculosis

Question 12

Thiosulfate citrate bile salts (TCBS)

Answer 12

Vibrio cholerae

Question 13

Bordet-Gengou

Answer 13

Bordetella pertussis

Question 14

Charcoal-yeast extract

Answer 14

Legionella pneumophila

Question 15

Skirrows

Answer 15

Campylobacter, Helicobacter

Question 16

Eaton

Answer 16

Mycoplasma pneumoniae

Question 17

Cetrimide

Answer 17

Pseudomonas aeruginosa

Question 18

Xylose-Lysine-Deoxycholate (XLD)

Answer 18

Salmonella, Shigella

Question 19

Ellinghausen-McCullough-Johnson-Harris (EMJH) / Fletcher’s

Answer 19

Leptospira interrogans

Question 20

Tremadotes are hermaphrodic or monoecious EXCEPT

Answer 20

Schistosoma

Question 21

All flukes are transmitted by ingestion of METACERCARIA except

Answer 21

Schistosoma (skin penetration of cercaria)

Question 22

All fluke eggs are operculated EXCEPT

Answer 22

Schistosoma

Question 23

MOA of Permethrin

Answer 23

Neuronal membrane depolarization via Na channels

Question 24

MOA of Malathion

Answer 24

Acetylcholinesterase inhibitor

Question 25

MOA of Lindane

Answer 25

Blocks GABA channels -> neurotoxicity