slides that have study points related to viruses and bacteria

1. Viruses And Bacteria A look at our microscopic world Chapter 2

2. Points To Remember

3. Viruses are classified as non-living Two types of viruses: active and hidden Hidden viruses can survive for hundreds of years before activating in a new-found host Active viruses can make you sick right away Genetic engineers can re-program viruses to deliver good DNA to help sick people Viruses are much smaller than Bacteria Two main parts of a virus: The Protein coat on the outside and the DNA on the inside.

4. Who was the first person to see and “discover” bacteria? Antony van Leeuwenhoek (1632-1723) Pronounced “ LAY vun hook”

5. Bacteria Others are Heterotrophic. They need others for food. Some are Autotrophic. That means they feed themselves Some Bacteria produce by Binary Fission or Asexual Reproduction To survive harsh conditions, Bacteria form Endospores Other Bacteria produce by Conjugation or Sexual Reproduction

6. Bacteria Have Flagella Or a tail they use To swim with

7. Names of Viruses Smallpox Virus Cold Virus Influenza Virus Cold Sore Virus Yellow Fever Virus

8. Bacteria in food can be killed with heat. This process is called Pasteurization.

9. Not all bacteria are bad. Many are used in foods like cheese, pickles, dried meat, soy sauce, bread and many others.

10. Three shapes of Bacteria Spiral Rodlike Spherical

11. Bacteria are natural Decomposers. That is to say they break down large chemicals into smaller chemicals in dead organisms.