BIOL 1113 Lecture Notes - Lecture 1: Chlamydomonas, Invagination, Chagas Disease

• School: Northeastern University
• Department: Biology
• Course: BIOL 1113
• Professor: Mary- Susan Potts- Santone

Document Summary

Eukaryotic supergroups: archeaplastids, green, red algae, land plants, chromalveolates, stramenopiles = brown algae, diatoms, water molds, alveolates = ciliates, dinoflagellates, apicomplexans, rhizarians, foraminiferans, radiolarians, excavates, euglenids, kinetoplastids, amoebozoans, amoeboids, slime molds, opisthokonts, choanoflagellates, animals, fungi. ~7,000 sp variety of environments: oceans, freshwater, snowbanks, tree bark, turtles" backs. Many symbiotic w/ fungi, plants, or animals. Morphology: most unicellular; many filamentous or colonial, some multicellular (resemble lettuce leaves) Plants thought to be derived from charophyta: cell wall containing cellulose, chlorophylls a & b, store excess food as starch, placenta, plasmodesmata (cell transport/communication, apical cells (growth) ex: volvox, spirogyra, chara, ulva, chlamydomonas. Marine (mostly in warmer seawater); some deep. Most in colder ocean waters along rocky coasts. Morphology: some small forms w/ simple filaments (>200m in, other large multicellular forms length) Pigments: chlorophylls a & c gives, fucoxanthin (type of carotenoid pigment) color excess food stored as laminarin (carbohydrate) sea = breeding ground ex: sargassum, laminaria, fucus.