Extra Misc. Questions Flashcards
(47 cards)
describe HSV make-up
Group I- dsDNA, enveloped
define Acronym for Group I/II viruses
‘Happy / Pap’
- Enveloped: HBV (partial dsDNA), HSV, Pox (cytoplasm)
- Naked: Parvo (ssDNA), Adeno, Papilloma, Polyoma
describe Polio make-up
Group IV- ssRNA (+), naked
define Acronym for Group III/IV viruses
‘Chirping CFTR’
- Enveloped: coronavirus, flavivirus, togavirus, retrovirus
- Naked: calicivirus, hepevirus, reo-/rota-virus (dsRNA), picornavirus
define Acronym for Group V viruses
Note- ssRNA (-), all enveloped — ‘bad prof’
bunya, arena, delta (defective), paramyox (fusion), rhabdo, orthomxyo (nucleus), filo
describe HIV make-up
Group VI- ssRNA(+) retrovirus, enveloped
explain function of gp120, gp41, p24 in HIV
- gp120: VAP, binds CD4+ and co-receptor
- gp41: hydrophobic element is exposed upon gp120 binding => fusion with membrane
- p24: capsid protein (used in early Dx)
describe make-up of HBV
Group VII partial dsDNA, enveloped
HBV binds mucosal cells and hepatocytes via (1). HBV is effective because once it enter the nucleus, (2) occurs
1- HBsAg
2- ssDNA randomly anneals to host genome => oncogenesis
define genetic reassortment, phenotypic mixing, antigenic shift, antigenic drift
- Reassortment: RNA combinations in nucleus
- Phenotypic mixing: new virons that express new protein combination
- Shift: entire event that results in new HA protein in human population (pandemic)
- Drift: random pt mutations that occur normally (annual epidemics)
list the 2 flagellates and 1 ciliates of intestinal protozoa
flagellates: giardia lamblia, trichomonas vaginalis
ciliates: balatidium coli
list the 2 flagellates blood/tissue protozoa
- leshmania (sand fly)
- trypanosoma (tsete fly - African sleeping sickness / American kissing bug - chaga’s)
in cestodes:
- head = (1)
- segments = (2)
1- scolex
2- proglottids
Candida has the following unique characteristics
pseudohyphae and budding yeast
____ is the most common AIDS defining disease
Pneumocyctis jiroecii (PCP)
narrow / low-angle branching hyphae indicates…
aspergillus
list the enveloped DNA viruses
(Happy Pap –> HHP part)
Note all are dsDNA: herpes (linear), hepadna (circular), poxvirus (linear)
list the naked DNA viruses
(Happy Pap –> PAPP part)
- parvo (ssDNA, linear)
- adeno (dsDNA, linear)
- papilloma, polyoma (dsDNA, circular)
list the ssRNA(-) viruses, are the enveloped or naked
(BAD PROF)- all are enveloped
- bunya (seg) or borna (lin)
- arena (seg)
- delta
- paramyox (lin)
- rhabdo (lin)
- orthomyoxo (seg)
- filo (lin)
list the dsRNA and ssRNA(+) viruses, distinguish enveloped or naked
(CAP FaCT = ssRNA (+))
Naked = CAP: calci, astro, picorna
Env. = FCT: flavi, corona, toga
dsRNA = reo/rota, Naked
retroviruses are (enveloped/naked) and include these two types: (2)
1- enveloped
2- lentavirus (HIV), oncovirus
list some viruses that enter via fusion
(enveloped)
HSV, HIV, paramyxovirus
list some viruses that enter via endocytosis and acidification
(enveloped)
influenza
list some viruses that enter via direct entry across plasma membrane
(naked)
poliovirus