What are Animal-like protists?

Animal-Like Protists Called Protozoas Single-celled Some parasites 4 Groups: amoebalike protists, flagellates, cilliates, & spore-forming protists

Ameobalike Protists Soft, jelly-like Found in fresh/salt water, soil, animals as parasites. contractile vacuoles Pseudopodia: false feet

Feeding Amoebas Engulf food 1.Senses food. 2.Surrounds bacteria or smaller protists with pseudopodia making a food vacuole.

Some parasitic amoebas live in human intestines and cause amebic dysentery (painful bleeding ulcers).

Protozoa with Shells Radiolarians Have an outer shell made of silica Foraminiferans Have snail-like shells made of calcium carbonate

Flagellates Have flagellums to move. Live in water. Some are parasites that cause dieases. Ex. Giardia Lamblia (diarrhea)

Some have symbiotic relationships. Ex. Live in guts of termites to digest wood.

Ciliates Have 100’s of hair-like structures called cilia. Cilia: move, help it get food, beat up to 60 x’s a second. Ex: Paramecium

Paramecium Have 2 Nucleus MacronucleusMicronucleus Large nucleus Controls the functions of the cell. Smaller nucleus Passes genetic material during reproduction

Protist Reproduction Asexually Offspring come from just 1 parent using fission Ex. Euglena and amoebas Sexually Offspring come from 2 parents. Ex. Paramecium use conjugation to make 4 total organisms!

Spore-Forming Protists Parasites Have 2 hosts. Ex. Plasmodium Vivax (Malaria)

Malaria has 2 hosts! The mosquito and you!