L65 Flashcards Preview

Viruses & Parasites > L65 > Flashcards

Flashcards in L65 Deck (17):
1

Mnemonic for the DNA viruses

HH-A-PPPP-y
Herpes
Hepadna
Adeno
Papilloma
Polyoma
Parvo
Pox

2

All DNA viruses have dsDNA genome except...

Parvovirus = ssDNA

3

All DNA viruses have icosahedral capsids except...

Poxvirus = complex

4

Name the 2 major polyoma viruses.

JC virus - C = cranium
JK virus - K = kidney

5

Mnemonic for picornaviruses

PERCH
Polio
Echo
Rhino
Coxsackievirus
Hep A

6

Where do most RNA viruses replicate in host cells? Name notable exceptions.

Most replicate in cytoplasm
Exceptions - those w/ nuclear requirement
- Flu
- HIV

7

Mnemonic for ssRNA viruses

"Call Pico and Flo to Come Rightaway"
Calicivirus
Picorna
Flavivirus
Toga
Corona
Retro
(Arranged smallest --> largest)

8

All negative sense RNA viruses have what 2 things? Mnemonic to remember the -ssRNA.

Helical capsids
Envelopes
"Always Bring Polymerase Or Fail Replication"
Arena
Bunya
Paramyxo
Orthomyxo
Filo
Rhabdo

9

Mnemonic for segmented RNA

BOAR
Bunyavirus
Othromyxovirus
Arenavirus
Reovirus

10

Mnemonic for viruses causing diarrhea

ACNE CAR
Adeno
Carona
Noro
Entero
Calcivirus
Astro
Rota

11

Mnemonic for maternal infections that can cross placenta and cause congenital abnormalities

ToRCHeS
TOxoplasmosis
Rubella
Cytomegalovirus
Herpes & HIV
Syphillis

12

What are the 4 general structures a virus can be/have?

1. Naked = iscosahedron capsule
2. Icosahedron capsule inside envelope
3. Protein helix inside envelope
4. Complex

13

Describe characteristics of naked viruses.

Stable
Released from host via cell lysis
Spreads easily
Symmetry
Ab immunity likely to be enough

14

Describe characteristics of enveloped viruses.

Labile - easily broken down, must stay wet
Released via budding off host cell membrane
Likely to need Ab & cell mediated immunity

15

Give the endings for order, family, sub family, and genus of viruses.

Order = -virales
Family = -viridae
Subfamily = -virinae
Genus = -virus

16

Define serotype.

Antigens that characterize a group of viruses (NOT Abs against a virus)

17

Define clade

Ancestor + descendants