BIOL 2030 Chapter Notes - Chapter 1: Euglenozoa, Euglena, Lobopodia
26 Apr 2016
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Unicellular, microscopic one to many nuclei; unicellular because no nucleus sole area of cytoplasm. Digestion in food vacuoles; osmoregulation contractile vacuoles. Amoebas move and feed by pseudopodia and use amoeboid locomotion: class rhizopodans move by lobopodia, filopodia, or cytoplasmic flow w/o discrete pseudopodia. Phylum euglenozoa move by flagella; series of longitudinal microtubules just beneath the cell membrane stiffen membrane to pellicle: class euglenoidea have light-sensitive stigma (eyespots) [shallow pigment cup]. No external locomotary organ; amoeboid mmt: class coccidea infect both vertebrates and invertebrates. Phylum ciliophora use of cilia (at least early life); never amoeboid. Amoeba: use pseudopods for motion; also, note: plasmalemma, ectoplasm, endoplasm, nucleus, contractile. Paramecium: narrow blunt end: the anterior | the broad pointed end: posterior, defence: discharge trichocysts small bodies of ectoplasm, peristome (oral groove), cytostome (mouth); posteriorly: cytopharynx. Apicomplexa: (class coccidea) trypanosoma: parasitic in the blood of humans and vertebrates: african sleeping sickness is the.
