1. Biodiversity: prokaryotes, protists & viruses Chapter 10.14 – 10.17 & Chapter 13

2. All three domains contain microscopic organisms. Focus now: Prokaryotes

3. Prokaryotes in general Domains bacteria & archaea Bacteria on the point of a pin, magnified 650x

4. Characteristics used to classify Domain Bacteria

5. Shape of cells

6. Characteristics of bacteria cell wall Two types of cell walls; use a Gram stain to identify type Gram + Gram –

7. Modes of Nutrition “organic feeders” “rock feeders” “light self feeders”

8. Characteristics of Domain Archaea

9. All three domains contain microscopic organisms. Focus now: Domain Eukarya

10. Kingdom Protista (multiple kingdoms ?)

11. Protists cont.

12. What about viruses? What is a virus? It’s not a cell...

13. Two kinds of viruses DNA viruses – RNA viruses

14. Who is at risk? Practically everything;