Locomotion 1. AMOEBA - It rolls slowly on a surface (i.e. ground, leaf, etc). Must live in water. It looks like the tracks on a bulldozer. - It changes its shape by extending pseudopods (“false feet”). Pseudopods are created by cytoplasm pushing on the cell membrane. This is called amoeboid action.
Locomotion 2. EUGLENA > Flagellates - Must live in water - Uses its flagellum to move. Whips it in front/behind its body to propel itself through the water. - If there is too little water for this type of locomotion, the euglena can use amoeboid action to move.
Locomotion 3. PARAMECIUM > Ciliates - Must live in water - Uses its cilia to move. - Cilia move in waves and act as oars to propel the paramecium through the water
FEEDING AMOEBA The amoeba extends its pseudopods around its prey The amoeba extends its pseudopods around its prey Where the pseudopods meet, a food vacuole is formed Where the pseudopods meet, a food vacuole is formed A lysosome joins/fuses with the food vacuole A lysosome joins/fuses with the food vacuole
Feeding in Amoeba continued The enzymes within the lysosome start to digest the food The nutrients released from the food diffuse into the cytoplasm of the amoeba These nutrients are used in cellular respiration to produce ATP (energy) Waste is removed when the vacuole fuses with the cell membrane and ejects the waste
Reproduction Protist reproduction is asexual The nucleus is replicated through the process of mitosis. All the DNA is copied exactly. Both the macronucleus and the micronucleus are replicated. The cell is then split into two daughter cells through the process of fission. The daughter cells are smaller than the original parent, but otherwise are identical.