3_Outline_BIO119_cellbio

3_Outline_BIO119_cellbio - Lecture 3 Prokaryotic Cell...

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Lecture 3 Prokaryotic Cell Biology Bio119 I.  CYTOPLASM A.   The cytoplasm is thick! B.   It contains nucleoid, ribosomes, macromolecules like proteins and  RNA, small molecules like amino acids, some intracellular inclusions C. Nucleoid 1.  DNA a.  b.  c.   Table. Comparison of genome sizes of various organisms Organisms Genome Size  (kbp) Predicted  ORFs Circular or  Linear, 1 or 2  molecules Mycoplasma genitalium 580 470 C, 1 Borrelia burgdorferi 910 853 L, 1 Helicobacter pylori 1700 1600 C, 1 E. coli 4600 4300 C, 1 Vibrio cholerae 4000 3890 C, 2 Mycobacterium  tuberculosis 4400 3900 C, 1 Methanococcus  jannaschii  (archaea) 1700 1682 C, 1 (plasmids) Saccharomyces  cerevisiae ( eukaryote ) 12,000 6000 L, 16 Human 3 million 30,000 L, 23 3- 1
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Lecture 3 Prokaryotic Cell Biology Bio119 d.  In an aggregate form called a nucleoid  2.  This structure may facilitate coupled:  D.  Ribosomes— 1.
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