Virus lifecycle - SB5 Flashcards
1
Q
what is a virus?
A
a DNA sequence - strand of genetic material surrounded by a protein coat (capsid)
2
Q
what is lysis
A
breakdown of the cell
3
Q
what is a bacterial lawn plate
A
a plate containing nutrients to enable the bacteria grow
4
Q
what is nutrient agar
A
a thin layer of gel on which the bacteria grow
5
Q
describe the steps of the lytic cycle
A
1- new viral component constructed
2 - host cell lyses and viruses’ are released
3 - attach to host and inject DNA
6
Q
describe the steps of the lysogenic cycle
A
1 - viral DNA integrates into host chromosomes
2- Host cell and viral DNA continue to multiply like normal cells
3 - when triggered, the virus becomes active
