M6: Viruses Overview Flashcards
1
Q
virus
A
- small, non-cellular particle
- can only replicate inside host cell (obligate intracellular parasites)
2
Q
2 basic components of viruses
A
- genomic material
2. capsid
3
Q
genomic material of viruses
A
RNA or DNA
4
Q
capsid
A
- membrane like structure containing virus’s genetic material
- often surrounded by envelope
5
Q
envelope
A
membrane that often surrounds capsid, uses proteins that can interact with complimentary proteins on host cell surface (works as camouflage)
6
Q
naked virus
A
no envelope surrounding capsid
7
Q
viral genome strand variety
A
single or double stranded
8
Q
viral genome arrangement
A
circular or linear
9
Q
viral genome length
A
from a few thousand nucleotides (ex: poliovirus) to 2.5 million nucleotides (largest: pandoravirus)
10
Q
human genome length
A
3 billion nucleotides
11
Q
viral shape
A
lots of variation
