BIO 2135 Lecture Notes - Lecture 3: Rhizaria, Euglenozoa, Apicomplexa
17 Jan 2017
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Very easy to observe and work with. Cilia are embedded in a plasma membrane (delicate surface) When cilia pull on the surface, they are strained, they must be really tightly anchored. They are all tied together with microtubules. Ciliates have a very uniform structure, can only be open to the outside at certain locations. Paramecium is a freshwater protist needs something to prevent them from bursting from too much water water is hypotonic to the cytoplasm (one is salty, one isn"t) Water diffuses in, cell swells water pumping structures allow us to remove any excess water that comes in **not an excretory structure** This allows the cytoplasm to never be diluted. Paramecium has two different types of nuclei very unique organisation of genetic material. Macronucleus = polyploid (multiple gene copies) for daily day to day function of cell. Micronucleus = one diploid complement of genetic material won"t be used until there is some sort of reproduction.
