Viruses & Prions Flashcards
1
Q
Normal Prion Protein
A
PrP^C
2
Q
Infectious Prion Protein
A
PrP^Sc
3
Q
How are Prions transmitted?
A
Only by close direct contact with infected tissues and secretions
4
Q
What is a virus particle composed of?
A
A nucleic acid core ( DNA or RNA, not both)
5
Q
What is a capsid composed of?
A
Protein subunits called capsomers
6
Q
What is acute non-persistent viral infection?
A
Happens quickly and comes & goes. Ex: common cold or influenza
7
Q
What is a latent persistent viral infection?
A
They stay dorment & then pop up. Ex: shingles or herpes
8
Q
What is a chronic persistent viral infection?
A
Last awhile. Ex: HIV, HPV, or Hepatitis C
9
Q
Steps of the Lytic Cycle
A
- Adsorption
- Penetraction
- Synthesis
- Assembly
- Release
10
Q
Steps of dsDNA virus
A
- Viral DNA enters nucleus
- Transcription occurs
- Translation
- Replication
- Assembly
- Integration
11
Q
Steps of ssRNA+
A
- Viral RNA enters cytoplasm
- Translation
- ssRNA+ serves as a template to make ssRNA-
- ssRNA- makes more ssRNA+
- Assembly
12
Q
Steps of Lysogenic Cycle
A
- Adsorption
- Penetration
- Integration
- Induction
- Synthesis
- Assembly
- Release