BIO 2137 Lecture Notes - Lecture 7: Apoptosis, Multinucleate, Charales
8 Oct 2016
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Document Summary
Plantae, fungi, animalia all have some protist as ancestor. Unicellular that undergo ingestion (phagocytosis, pinocytosis) and are mobile. Unicellular, colonial or multicellular photosynthetic organisms: green algae= ancestor to land plants. Has specialized tissues but lacks typical plant features. Photoautotrophic but some rely on external e sources. Combination of molecules will be the same, dominant molecule determines colour. Chemical cycling (co2 sugar, co2 caco3) cliffs of cover= fossils of old algae. Solution to gw: family salpidae: eats algae. As it grows, maybe it can suck up all co2 in atmosphere, then dumps out carbon into bottom of ocean. Pump from bottom of ocean (cold, nutrient rich water: ecological importance of algae. Symbiotic relationship: zooxanthellae: unicellular algae that live within corals. If this algae dies/ejected (due to climate change=stress) coral bleaching: algal blooms, explosions in algal pop. Caused by warm water, low salinity(less fighting osmosis), high nutrients. Possible toxins- within bivalves (filter feeder: eutrophication.
