Shit - Micro UWorld

Question 1

Histo vs coccidio

Answer 1

• Histo = circles in macrophages Coccidio = endospores in spherules

Question 2

slap cheeck =

Answer 2

5th disease; parvo B19, erythema infectiosum

Question 3

Altered pol genes in HIV via

Answer 3

antiretroviral chemotherapy - protease inhibitors and RT inhibitors

Question 4

Altered env genes in HIV via

Answer 4

escape from host neutralizing Abs

Question 5

Antipseudomonals - 6 groups and specific names

Answer 5

• Penicillins: pipercillin, ticarcillin, cefepime (4), ceftazodime (3)
• Carbapenems: imipenem (w/ cilistatin), meropenem
• Aminoglycosides: gentamycin, amikacin, tobramycin
• ciprofloxacin
• aztreonam
• FOR MDR: colistin, polymixin B

Question 6

H. flu vs Nisseria agar

Answer 6

H. flu = chocolate = NAD (V) and hematin (X)

Nisseria = thayer martin = Vp T Cn Nf = vanco (+), trimethoprim, colistin (-), Nystatin (f)

Question 7

PRP

Answer 7

type b h. flu capsular polysaccharide

Question 8

Intracellulars:

• bacteria obligates:
• bacteria facultative:
• fungi:
• Protozoa:

Answer 8

• BO: coxiellia, chlamydia, rickettsia
• BF = salmonella, nisseria, brucella, mycobacterium, listeria, fransicella, legionella, yersinia
• crypto, histo, PCP
• toxo, plasmodium

Question 9

Difference between EHEC and other E. colis

Answer 9

EHED does NOT ferment sorbitol on MacConkeys and it does NOT produce glucoronidase

Question 10

Role of M protein

Answer 10

S. pyogenes major virulence factor. Prevents phagocytosis and complement activation.

Abs to M protein made by host also cause RHD and PSGN

Question 11

Virulence factor of E. coli responsible for neonatal meningitis

Answer 11

K1 capsular antigen (FA 138)

Question 12

Virus tht takes its envelope from the nuclear membrane instead of the PM

Answer 12

Herpesviruses

Question 13

Food item for EHEC

Answer 13

raw beef

Question 14

5 bacterial toxins coded in phages

Answer 14

Shiga toxin - EHEC

Botulinum toxin

Cholera toxin

Diptheria toxin

Erythrogenic toxin - S. pyogenes (scarlet fever)