1. Life Functions in Protists
Your Father was a protist

2. ANIMAL LIKE PROTISTS (19.1)
Also known as “protozoans”
Heterotrophic
Classified into four groups based on how they move
Zooflagellates
Sarcodines
Ciliates
sporozoans

3. Zooflagellates Use a flagella to move:
A long projection that looks much like a “whip”
Same things that a sperm cell use to move
Some reproduce asexually (mitosis) and some reproduce sexually (meiosis)

4. Sarcodines Move using something called a pseudopod
this same pseudopod (pseudopodia) is used to help the amoeba capture and take in food particles
Amoeba is a cell that is a sarcodine (***)
Amoebas also called the “SHAPELESS PROTIST”

6. Ciliates These use “cilia” for movement and feeding
Cilia move in a sweeping motion to help cell move
Cilia also sweep food particles toward the “oral groove” of the cell
Paramecium is a cell that is a ciliate (***)
Removes excess water using a “contractile vacuole”
Contain 2 nuclei:
Macronucleus: stores genetic information (DNA)
Micronucleus: backup copy of cells genes for reproduction

7. Paramecium

8. Ciliates Some reproduce asexually (binary fission)
Some reproduce sexually (conjugation)
No new individuals are really formed here, they are just exchanging genetic information through the PILUS connecting them

9. Sporozoans
Parasites that live in hosts such as fish, birds, and humans
That means they get their food from their hosts
Reproduce by means of spores
A tiny cell that can grow into an organism

10. PLANT LIKE PROTISTS (19.2) Commonly described as algae
Contain chlorophyll and conduct photosynthesis
Usually live near the edges of water
And a vast amount in the oceans
Produce a MAJORITY of the earth’s oxygen
Six groups:
Diatoms, dinoflagellates, euglenoids, red algae, brown algae, green algae

11. Diatoms Dinoflagellates Euglenoids Red Algae Brown Algae Green Algae
Cells
Uni-
Multi-
Uni- Multi-
Nutrition
Auto- (50%)
Hetero- (50%)
Auto
Decomp.
Movement
2 Flagella (Spinning Algae)
Flagella
Reproduction
Sexually Asexually
Asexually (binary fission)
Binary fission
*Alternation of Generations

12. Alternation of Generations
In this pattern of reproduction, organisms alternate between haploid (n) and diploid (2n)
Gametophyte:
Haploid (n) form of organism
Produces “gametes” (duh!)
Sporophyte:
Diploid (2n) form of organism
Undergoes meiosis to form haploid spores (n) that can develop into a new gametophyte
Look at Figure on page 516

13. FUNGUS LIKE PROTISTS (19.3)
Heterotrophs (decomposers)
Have cell walls
Use spores to reproduce
ARE DIFFERENT FROM FUNGI because they “lack chitin in their cell wall”
Include 2 groups:
Slime molds
Water molds

14. Slime Molds Resemble colorful blobs that live in damp environments
Living mass oozes across a surface
Feeds on bacteria, bits of decaying organic matter, and microorganisms
Are like animals because they move about and engulf food

15. Water Molds Small, unicellular Live in water/moist soil
Grow as tiny threads that look like “fuzz”
Some are decomposers, others are parasites that live on a host

16. THE END!!!