330JP12 - 6 bp) s the archael cells that captured them...

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BISC 330L Dr. John Petruska 330JP11.ppt Lecture 11 Appendix: Cell Structure/Organelles and Lecture 12 Cell Membranes References: (3rd Ed 2005), Chap. 1.5, (7,20,21) (6th Ed 2007), Chap. (12,18,29) Lewis, Human Genetics (7th Ed 2007), Chap. 2
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Fig. 1.22 Animal cell has DNA-containing organelles of 2 kinds: Nucleus and Mitochondria
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Fig. 1.23 Plant cell has DNA-containing organelles of 3 kinds: Nucleus, Mitochondria and Chloroplasts. Pectin
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HOUGHTS ON EUKARYOTIC CELL ORIGINS ukaryotic cells may have originated from ancient naerobic prokaryotes (archaebacteria) that engulfed a) photosynthetic prokaryotes and/or (b) aerobic rokaryotes and gradually reduced them in size by emoving most of their DNA. The captive prokaryotes ecame organelles (with circular dsDNA < 10
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Unformatted text preview: 6 bp) s the archael cells that captured them gained control y acquiring most of their DNA. . cyanobacterium ---> chloroplast (10 5-10 6 bp) . aerobic bacterium ---> mitochondrion (10 4-10 5 bp) rchaebacteria that engulfed a and b may have become recursors of plant cells; those that engulfed b only, Suggested ancestor for mitochondria: 1 million bp DNA (830 genes) 200,000 bp mtDNA 6,000 bp mtDNA 16,569 bp mtDNA Diagram of a mitochondrion Diagram of a chloroplast (Nucleoplasm) (Cytoplasm) Nuclear pore structure indicated by electron microscopy (D. Stoffler, Scripps Research Institute ) Lewis Fig. 9.6 Fluid mosaic model of membrane structure. Lipids and and proteins are assumed to move rapidly in the plane of membrane but transverse motion is expected to be much slower....
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This note was uploaded on 05/03/2010 for the course BISC 330L taught by Professor Petruska,tower during the Spring '07 term at USC.

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330JP12 - 6 bp) s the archael cells that captured them...

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