1. The Evolutionary History of Biodiversity
Protists
The Evolutionary History of Biodiversity
Concept 2: Analyzing the diversity of bacteria, archaea, protists, and fungi (Ch 26, 27, 28, 31)

2. But first...Try This! (from Bacteria and Archaea)
What features of prokaryotes make it likely that considerable genetic variation will be added to their populations with each generation?
What are the differences between the four major types of nutrition in prokaryotes. Which are only possible in prokaryotes?
Identify three ways that prokaryotes have positively (mutualistically or commensally) affect your life so far today.

3. But first...Try This! (from Bacteria and Archaea)
What features of prokaryotes make it likely that considerable genetic variation will be added to their populations with each generation?
Rapid cell division with high probability of mutations
Transformation
Conjugation
Transduction

4. But first...Try This! (from Bacteria and Archaea)
What are the differences between the four major types of nutrition in prokaryotes. Which are only possible in prokaryotes?
Photoautotrophic – like plants!
Photoheterotrophic – prokaryotes only
Chemoautotrophic – prokaryotes only
Chemoheterotrophic – like you (and spiders...)!

5. But first...Try This! (from Bacteria and Archaea)
Identify three ways that prokaryotes have positively (mutualistically or commensally) affect your life so far today.

6. Protists An appreciation of the “real kingdoms” of Protista.
You must know:
An appreciation of the “real kingdoms” of Protista.
How chloroplasts and mitochondria evolved through endosymbiosis.
Refer to Ch 28 in Campbell and media resources
Acetabularia ('mermaid's wineglass‘)

7. Protists Eukaryotic “True” sexual reproduction (and asexual)
Not plants
Not animals
Not fungi
Not necessarily single celled (but most are)
“True” sexual reproduction (and asexual)
Polyphyletic (or… Paraphyletic?... There is debate!)
NOT one kingdom! (and don’t let anyone tell you it is)
INCREDIBLY diverse

8. Endosymbiosis The birth of the Eukaryote?
Primary verses secondary endosymbiosis

9. Endosymbiosis The birth of the Eukaryote?
Primary verses secondary endosymbiosis

10. Classification – See page E-2 at back of Campbell
Three categories?
Animal-like
Plant-like
Fungus-like
Nothing-like?
Five “supergroups” of the Eukaryotic domain?
Excavata
Chromalveolata
Rhizaria
Archaeplastida
Unikonta

16. In Motion…

17. In Motion…

29. Ecological Connections
Mutualistic Symbiosis
Photosynthetic dinoflagellates and coral polyps
Protists and termites
Parasitic Symbiosis
Malaria-causing protist Plasodium
Photosynthetic Producers
¼ of all the world’s photosynthesis done by diatoms, dinoflagenllates, multicellular algae and other protists!
Foundation of many food webs

30. Let’s Explore!!! Paramecium aurelia Didinium Amoeba proteus
I’d like to introduce you to:
Paramecium aurelia
Didinium
Amoeba proteus
Stentor coeruleus