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What do viruses need to reproduce?
host cell
Virus are living or non-living particles?
non-living
Are viruses surrounded by a protein coat?
Yes, they are.
How do virus get their name usually?
they are named after a disease or the person who discovered them
word means "to break down"
lytic
Virus are made up of what?
DNA or RNA
Term refers to when the host cell bursts and new virus are released
lysis
These contain a dead form of a virus and give immunity to it?
Vaccines
Virus contain ___________ and __________.
Protein and nucleic acids
Bacteria can move. What is the name of the structure that moves them?
Flagellum
When a virus enters a bacterial cell, makes copies of itself and causes the cell to burst or lyse, it is in the _____________ cycle.
Lytic
What do virus' need to reproduce?
A host
Bacteria lacks a nucleus therefore it is
Prokaryotic
Describe host range.
Each virus has a limited number of host cells that it can infect.
What happens in the lytic cycle?
The lytic cycle produces new viruses and breaks open the host’s cell wall, releasing the viruses.
Why do some scientists believe that viruses are not living organisms?
Because viruses do not respond to their environment, have no metabolism, and cannot replicate on their own.
