BIO 1140 Chapter Notes - Chapter 2-3: Murchison Meteorite, Nuclear Localization Sequence, Nuclear Pore
16 Aug 2016
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The plasma membrane is made up of a phospholipid bilayer, due to water being insoluble with lipids, it must pass through protein channels. Have capsule and cell wall, providing rigidity and structure to the cell. Wall may be coated with polysaccharides called a glycocalyx. When the glycocalyx is diffuse and loose it is referred to as a slime layer. When it is gelatinous and closely packed to the wall it"s a capsule, providing protection and possibly helping the cell attach to things. Prokaryotic cells lack internal organelles, since most cell function takes place in the cytoplasm or on the membrance. There are however a few invaginations which may occur in organisms like photosynthetic bacteria which allow photosynthesis to take place. Chapter 2. 3b eukaryotic nucleus contains more dna than. The nuclear envelope has lamins lines to help inforce the structure. (protein filament) Nuclear pore has an octagonal symmetrical nuclear pore complex.
