Characteristics Mostly unicellular with a nucleus. Some multicellular algae. May be producer, consumer, decomposer 3 types ( fungus like, plant like, animal like)

Fungus Like slime molds: can be uni-or multicellular, eat bacteria, yeast and decaying matter, form spores to reproduce. ex. water molds: can be decomposers or parasites of plants or animals caused the potato famine.

Plant Like Algae Produce most of the oxygen on earth Important part of the food web Food for animal like protists and others.

Green Algae some are microscopic and make up plankton that lives in ocean. - some are seaweed

Brown Algae still has chlorophyll - ex. rockweed, has holdfasts that act like roots to hold it to rocks. - mostly in colder waters

Red Algae red color allows it to absorb a part of the sunlight that can penetrate deep into the ocean. - some make substances called agar, for use by scientists, and in food. - mostly in warmer waters

Golden Algae - ex. Diatoms: are glass-like -when they die they form diatomaceous earth and that is used in toothpaste and scouring powder. - also used in paint to help it reflect light for road stripes.

Fire Algae - also called dinoflagellates, they have 2 flagella - some cause "red tide", where they produce toxins that get in shellfish and make people sick. - some have bioluminescence "having living light" and glow in the water

Euglenoids - single cell that is plant and animal like: has chlorophyll, but also has a flagella for moving.

Pair/ Share With your elbow partner, discuss 2 reasons plant like protists are helpful. Then give 2 reasons they can be harmful. What was the most interesting thing you learned about plant like protists.

Animal Like Protists or Protozoans Are consumers Important part of the food web Grouped according to how they move.

Amoeba - have pseudopods or "false feet" that surround food, then vacuoles release enzymes to digest it. - contractile vacuole pumps out water - O2 and CO2 go in and out of membrane - reproduce by binary fission

Ciliates - Ex. paramecium - covered with small hairs called cilia that help it move and push food toward its oral groove (mouth).

Flagellates ex. Giardia lamblia - use flagella, a whip like structure to move - can live in water and get in digestive tracts of vertebrates and cause severe stomach upset.

Sporozoans ex. Plasmodium, carries malaria through mosquitoes - are parasites and live off other organisms - do not move or eat on own - reproduce by spores - if an infected mosquito bites you, it will release sporozoans that go into your liver, form spores that invade the red blood cells and destroy them. If a mosquito then bites you, it becomes a carrier

Looking Further With your microscope partner, draw and label the following Protists: 1. Diatom 2. Green algae 3. Amoeba 4. Paramecium 5. Prepare a drop of pond water and identify and draw at least 5 types of plankton.