1 / 13

PROTISTS

PROTISTS. Last Section of Microorganisms. Lesson Outline:. 3 Types of Protists Classification: Locomotion Feeding Reproduction. 3 Types of Protists. Amoeba Euglena Paramecium. Locomotion. AMOEBA

allan
Download Presentation

PROTISTS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PROTISTS Last Section of Microorganisms

  2. Lesson Outline: • 3 Types of Protists • Classification: • Locomotion • Feeding • Reproduction

  3. 3 Types of Protists • Amoeba • Euglena • Paramecium

  4. Locomotion • 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.

  5. Locomotion • 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.

  6. Locomotion • 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

  7. FEEDING • AMOEBA • The amoeba extends its pseudopods around its prey • Where the pseudopods meet, a food vacuole is formed • A lysosome joins/fuses with the food vacuole

  8. 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

  9. 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.

More Related