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Algae By Davis Barber, Pete Carrol, and KC McCarthy Cell Complexity and Structure • Protists can be both multi/unicellular •Has a nucleus •All are eukaryotes •Some lack a cell wall •Most have mitochondria •Some have chloroplasts-allowing photosynthesis •Have DNA and RNA Major Phyla and Species Animal-like protists • Phylum Amoebas: Example Amoeba •Phylum Ciliophora: Example Paramecium Coralline Algae •Phylum Sporozoa : Example Plasmodium •Phylum Flagellates: Example Trypanosoma Plant-like protists •Phylum Red Algae: Example Chondrus •Phylum Brown Algae: Example Laminaria •Phylum Green Algae: Example Ulva Fungus-like protists •Phylum Cellular slime molds: Example Dictyostelium Algae •Phylum Plasmodial slime molds: Example Physarum •Phylum Water Molds, Mildews, Rusts: Example Phytophthora Trichonypha Tetrahymena Amoeba How Protists Feed and Obtain Energy Animal-Like Protists (Protozoa) • Heterotrophic • Must move around to obtain energy Plant-Like Protists (Algae) • Autotrophic • Means they do no need to move around to obtain energy • Contain chlorophyll and a chloroplast Type of green algae Reproduction BASIC PROTISTS •Reproduce through sexual and asexual reproduction •Meiosis and Mitosis like any organism MITOSIS MEIOSIS • • • •Occurs in protists such as Paramecia • Parent cell divides Turns into two cells Each resulting cell is ½ size of parent cell Occurs in protists such as amoebas •Two cells join at oral grooves •Genetic material is transferred •Several divisions occur, resulting in eight new cells