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Viruses
Viruses and Spontaneous Generation
Question | Answer |
---|---|
What is a virus? | -an infectious particle that is non-living |
What is a parasite? | -lives on other living organisms -harms the hosts |
What is a host? | -the living organism that the parasite lives on |
4 characteristics of viruses | -when removed it ceases -extremely small -only active when inside a living cell -are made up of DNA and RNA |
Lytic System (An Insect Runs By Rivers) | -Attaches to a host -Injects -Replicates -Bursts open -Releases virus |
metabolism | -viruses have no metabolism -no food or energy requirements |