19 2 Animallike Protists KEY CONCEPT Animallike protists

19. 2 Animal-like Protists Animal-like protists move in various ways. • Animal-like protists are

19. 2 Animal-like Protists • Macronucleus – the “brain”; controls cell activities • Micronucleus

19. 2 Animal-like Protists • Protozoa with flagella are zooflagellates. – flagella help zooflagellates

19. 2 Animal-like Protists • Some protists move with pseudopods. – change shape as

19. 2 Animal-like Protists • Some protists move with pseudopods. –change shape as they

19. 2 Animal-like Protists • Some protozoa move with cilia. – also called ciliates

19. 2 Animal-like Protists Some animal-like protists cause disease. • Protists cause some wellknown

19. 2 Animal-like Protists Genetic relationship to malaria and Sickle Cell Anemia • AA

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19. 2 Animal-like Protists KEY CONCEPT Animal-like protists are single-celled heterotrophs that can move. Also called protozoa

19. 2 Animal-like Protists Animal-like protists move in various ways. • Animal-like protists are often called protozoa. macronucleus contractile vacuole food vacuole oral groove micronucleus cilia

19. 2 Animal-like Protists • Macronucleus – the “brain”; controls cell activities • Micronucleus – has the chromosomes; controls reproduction • Contractile vacuole – expels extra water; works like a “sump pump” • Oral groove – “mouth”

19. 2 Animal-like Protists • Protozoa with flagella are zooflagellates. – flagella help zooflagellates swim – May have 1 or more flagella – more than 2000 zooflagellates

19. 2 Animal-like Protists • Some protists move with pseudopods. – change shape as they move –Use pseudopodia for moving and feeding – amoebas

19. 2 Animal-like Protists • Some protists move with pseudopods. –change shape as they move – amoebas – foraminifera

19. 2 Animal-like Protists • Some protozoa move with cilia. – also called ciliates –cilia help protists swim and capture food – more than 8000 ciliates macronucleus –Ex: Paramecium contractile vacuole food vacuole oral groove micronucleus cilia

19. 2 Animal-like Protists Some animal-like protists cause disease. • Protists cause some wellknown infectious diseases. • Malaria is caused by Plasmodium and spread by mosquitoes. (Anopheles) • Sleeping sickness is caused by Trypanosoma and spread by Tsetse flies. • Giardiasis is caused by Giardia and spread through water. human liver sporozoites liver cells developed parasites red blood cells Malaria Infection http: //www. animalplanet. com/tv-shows/monsters-insideme/videos/malaria-parasite/

19. 2 Animal-like Protists Genetic relationship to malaria and Sickle Cell Anemia • AA – normal red blood cells, no malaria resistance, may die • Aa – some Sickle cell symptoms, resistance to malaria, so live • aa – have Sickle Cell Anemia, may die, have resistance to malaria ( but so what? Die anyway)