Viruses Flashcards
1
Q
Characteristics:
-size
A
Small, only seen under microscope
2
Q
States
A
Active: symptoms
Dormant: in body, no symptoms (latency) - can stay this way
3
Q
Why can it only survive and reproduce in a living host?
A
Because they have no cell “parts”
4
Q
Shapes (3)
A
Polyhedral: cubical (circle)
Helical: spiral
Complex: tadpole like
5
Q
Structure:
Acellular and surrounded by protein coat (capsid) called ?
What’s is function?
A
Lipid bilayer
Protects virus from hosts nuclease enzyme
6
Q
What is the core of the cell made out of?
What is the result of this?
A
DNA/RNA
Not in nuclear membrane therefore causes diseases in plants and hard to cultivate
7
Q
How does a virus mutate?
A
- Injects DNA into bacteria
- Multiples into many viruses
- Bacteria cells burst and virus spreads more
8
Q
Living or non living?
Why?
A
Not single/multicellular
From Mrs Gren: can only move and reproduce(mutate)
Gets energy from host
