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