MCB 2000 Chapter Notes - Chapter 5: Isogamy, Exocytosis, Catabolism
Document Summary
The eukaryotic microorganisms: membrane surrounding dna - nucleus, internal membrane-bound organelles, dimensions: 10-100 m in diameter, more complex structure, comprised of algae, protozoa, fungi, animals, and plants. The history of eukaryotes - endosymbiotic theory: eukaryotic cell evolved from an association between. Photosynthetic prokaryote (cyanobacteria: at the begging, they were undigested pray or internal parasites, retained portion of dna, ribosomes (70s), and cytoplasmic membranes. Cilia: shorter and more numerous than flagella, coordinated beating propels cells through their environment, also used to move substances past the surface of the cell. Internal structure of a flagellum or cilium: cytoplasm containing microtubules, nine pairs of microtubules arranged in a ring (2x9 +2, microtubules are composed of tubulin, surrounded by the plasma membrane. Various polysaccharides: algae cellulose, silicate, agar, fungi - chitin (insects, yeast - glucan and mannan, protozoa - do not have a typical cell wall - flexible outer covering pellicle. Cytoplasmic membrane: similar to the plasma membrane of prokaryotes (phospholipid bilayer)
