viruses
DESCRIPTION
Viruses. But first…Classification Recap. And now back to Viruses!. 2.2. Living vs. Non-Living?. Organization (Cells) Metabolism Responsiveness Growth Reproduction Evolution Ecology. Examples of Viral Diseases. - PowerPoint PPT PresentationTRANSCRIPT
Living vs. Non-Living?
• Organization (Cells)• Metabolism
• Responsiveness• Growth
• Reproduction• Evolution• Ecology
Examples of Viral Diseases
• common cold, chicken pox, AIDS, cholera, rabies, influenza, hepatitis B, cold sores, measles, mumps, pneumonia, etc.
• hepatitis C & links to liver cancer• many animal & plant viruses
Epidemic vs. Pandemic
• limited vs. widespread (usually global) geographic region
• Have you seen this film?• http://www.youtube.com/watch?v=4sYS
yuuLk5g
Host Range
• most are very specific
• some can infect many species
• bacteriophage infects bacteria cells
Vaccinations
• global elimination of smallpox by WHO in 1980
• human papillomavirus (HPV) & connection to cervical cancer
Viroids
• small infectious pieces of RNA without capsid
• discovered in 1971• responsible for
some plant diseases