Biology 2382B Chapter Notes - Chapter pg. 11: Periplasm, Isoleucine, Mesosome
14 Dec 2016
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Prokaryotic cells (bacteria) : single closed compartment that is, surrounded by the plasma membrane, have relatively simple internal organization lack a defined nucleus, Comprise 5th and 6th kingdoms: eubacteria (true bacteria) single celled bacteria, cyanobacteria or blue-algae (unicellular/filamentous chains of cells, archaea ^ similar structures. Eukaryotic cells : contain defined membrane bound nucleus and, extensive internal membranes that enclose the organelles. Region of cell lying between the plasma membrane and the nucleus is the cytoplasm: made of cytosol (water, dissolved ions, small molecules, and proteins) + organelles. Euka include the first 4 kingdoms: plants, animals, fungi, protists. The single circular dna genome is extensively folded, considered as central region of cell. Most ribosomes are found in the dna-free regions. Some bacteria have invagination of cell membrane mesosome associated with dna synthesis and secretin of proteins. The cell wall adjacent to the external side of the plasma membrane: for protection and maintenance of shape: composed of:
