Viruses - structure Flashcards
1
Q
is a virus seeable to the naked eye?
A
no a virus can only be seen with a electron microscope
2
Q
how big is a virus?
A
20 - 300nm
3
Q
whats 1cm in nm?
A
10 million nanometers
4
Q
Describe the structure of viruses that infect plants:
A
- symmetrical or spherical
- protein outer layer coat
- nucleic acid core of RNA only
5
Q
Describe the structure of viruses that infect animals:
A
- symmetrical or spherical
- protein outer layer coat
- nucleic acid core of RNA or DNA but never both
6
Q
Describe the structure of viruses that infect bacterial cells:
A
- has unique structure made up of (from top to bottom):
- head
- collar
- sheath
- base plate
- pins
- has DNA nucleic acid core
