BIO 2135 Lecture Notes - Lecture 4: Protist, Zygote, Macronucleus
26 Jan 2017
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Document Summary
Morphological "identities" made of reinforcing meshwork underneath the cilia layer. No cell wall like algea or chitin in fungal to prevent the protist from bursting. Water is hypotonic to protist, water will diffuse into protist. Uses atp to move water into the ampulla, when pressure builds, the ampulla squirts water through pore. Water from cytoplasm is put into endomembrane space, never change concentration in cytoplasm. Many copies of the same gene, because polyploidy. In splitting, asexual, the nucleus just splits in two. Similar to animals because animals have germ genome in pristine condition for reproduction with somatic cells doing everything else. Some to swim, some to walk across substrate, some for food. Conjugates join at the oral area and the micronucleus undergoes meiosis. Swap the haploid products of micronucleus meiosis in between the two cells. Two haploid nucleus of each, meet each other and fuses. Has 8 extra cells in the end from 2 conjugating cells.
