Bacteria v. Viruses

Archaebacteria live in extreme environments such as swamps, hydrothermal  vents deep in the ocean, acidic thermal springs in the ground, and extremely salty water.

Eubacteria live in most habitats some cause diseases such as strep throat and pneumonia Cyanobacteria – autotrophic Escherichia coli - heterotrophic

Viruses v. Bacteria Bacteria- living microorganisms A. Some are pathogenic (cause diseases)-+ Examples Tetanus Neissaria gonnorhea Strep throat- Streptococcus pyrogenus Anthrax- Bacillus anthracis Pneumonia B. Some are very useful Decomposing dead things Breakdown garbage in landfills E.coli

Viruses- not considered living organisms; have to be inside a host cell to reproduce A. contain DNA and RNA B. diseases caused by viruses HIV, chicken pox, Herpes, Flu (influenza) C. Two ways of infecting cells Lytic cycle Lysogenic cycle

Viral Treatments For viral infections, you treat the symptoms Use vaccines and antiviral drugs for severe infections.

Avian Flu Virus

Symptoms Symptoms in humans Fever, cough, sore throat Eye infections Pneumonia Severe respiratory diseases

Vaccines Began testing vaccinations in April, 2005 Vaccinations must prove to be safe and effective Vaccinations are hard to create Virus mutates quickly