2. Protists

3. Text Book Section – answer the questions on the back of the reading. Then look under the microscopes at two different protists and draw what you see.
1. How do scientists now classify/group protists?
2. What are the different methods protists use for obtaining energy?
3. Where are protists found?

4. Microbial life: Prokaryotes and Protists
Protists are a Kingdom within Eukarya
Protists are mostly single celled, some colonial or multicellular
More complex than the Archaea and Bacteria

5. Recall Classification
Life
Archaea Bacteria Eukarya
Archaea Bacteria Protista Plantae Fungi Animalia

6. Protista
A eukaryote that is not a plant, animal, or fungi, it is often single-celled
Some of the most complex and elaborate cells in world

7. protista Often living in wet environments
Incredible diversity of protists
Can be grouped in many ways, more and more is discovered about protists each year

10. Obtaining Energy
‘self-feeding’ ‘other feeding’ ‘mixed feeding’

11. Groupings ‘Plant like’ Protists and ‘Animal like’ Protists
simplified version, but scientists are still discovering the best way to classify and have many different hypotheses

12. Plant-like Protists
Contain chlorophyll and can carry out photosynthesis

13. autotrophy Produce their food through photosynthesis
Algae is most common
Can be multicellular

14. autotrophy Brown Algae – common name is kelp Can grow up to 60 meters
Provides food source and habitat for marine organisms

15. autotrophy Diatoms Unicellular algae
one of most important photosynthetic organisms on Earth
Contains silica in the cell wall
Used in toothpaste, polishing agents, water filters,

16. Diatoms

17. Dinoflagellates “two flagella”
Common component of plankton (groups of organisms living near the water’s surface)
“blooms” occur when there is an increase in nitrogen and phosphorus forming a “Red Tide”

18. dinoflagellate

19. Dinoflagellates can produce neurotoxins that harm the organisms eating them.