cell structure (viruses) Flashcards
1
Q
what is a virus?
A
nucleic acid surrounded by protein
2
Q
what is the structure of a virus?
A
core of genetic material, protein coat=capsid, attachment proteins
3
Q
how do viruses replicate?
A
use host cells
4
Q
how do viruses use host cells?
A
use their attachment proteins to bind to complementary receptor proteins on the surface of host cells
5
Q
why can some viruses only infect one type of cell?
A
different viruses have different attachment proteins and therefore require different receptor proteins on host cells
6
Q
why do viruses not undergo cell division?
A
because they are not alive
7
Q
how do viruses replicate?
A
inject their genetic material into the host cell, then the host cell uses its own mechanisms to replicate the viral particles
