BIOL 1080 Lecture Notes - Lecture 9: Foraminifera, Dinoflagellate, Pfiesteria
Document Summary
Lysis (bursting) of cells infected with viruses spills contents and releases large amounts of organic matter that can be utilized by other organisms (dissolved organic matter or dom) Prokaryotes: archaea and bacteria characteristics, prokaryotic- no nucleus. Marine diatoms: photosynthetic, yellow-brown in color, photosynthetic pigments, chlorophyll a & c, and carotenoids. Some produce a toxin, domoic acid, that can accumulate in the tissues or organisms that eat diatoms such as shellfish and small fishes. Marine dinoflagellates: most species are marine, mostly photosynthetic, some can ingest particles, each species has a particular shape, reinforced by a plates of cellulose, two flagella in grooves for motion. Some species can reproduce in larger numbers and produce red tides harm shellfish, and impair the nervous system in humans. Other marine protists: other groups of marine photosynthetic plankton, silicoflagellates. Star shaped internal skeleton of silica, with two flagella of varying lengths: coccolithophorids, ornate shells of calcium carbonate plates.
