Animal-Like Protists: Protozoans ex 2: Giardia Intestinal parasite from contaminated water Symptoms: tired, weight-loss, diarrhea Use FLAGELLA to moveFLAGELLA
Animal-Like Protists: Protozoans ex 3: Trypanosomes Causes African Sleeping Sickness: Fatal! Fever, chills, skin rash, affects nervous system In blood, spread by Tsetse flies in Africa Use FLAGELLA to move
Animal-Like Protists: Protozoans ex 4: Paramecium Use CILIA to move and to bring food into their mouth poreCILIA Food is packaged into vacuoles and chemically broken down Waste leaves through anal pore
Animal-Like Protists: Protozoans Ex 5: Sporozoans Produce spores to reproduce Parasites live in blood Plasmodium causes malaria, Plasmodium Deadly - kills 3 million every year Mosquitoes transfer infected blood
Protists: Algae Ex 4: Seaweed Have chloroplasts Many cells together, up to 60 cm long and some 100 m tall (giant kelp) Red, green, browngreen In many foods
Protists: Osmosis- water balance Water moves through cell membrane from high concentration of water to low concentration of water In fresh water, a protist cell may burst, so protists collect water and push it back out
Questions: 1. Why are ground-up diatoms sometimes used in powdered cleansers? 2. Which protist that you observed do you think is the most advanced? 3. Why is it more advanced? 4. In which protist that you observed could you identify the most organelles? 5. How many organelles could you see and identify?