2BB lecture 9-25-09 bacteria

2BB lecture 9-25-09 bacteria - Chapter 26 (pp.552-553)...

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Unformatted text preview: Chapter 26 (pp.552-553) Treeof Life, or Ring of Life(?) Learning objectives: Understand the portrayals of domain relationships are hypothetical, and change with new information Chapter 27 (pp.556-560, 564,565) The Prokaryotes Learning objectives: Draw/compare Gram-positive bacteria and Gram-negative bacteria cell walls. Know the function of the: capsule, fimbriae, sex pilus, nucleoid, plasmid, and endospore Describe the nutritional types of cells (regarding carbon and energy sources) From Two Kingdoms to Three Domains Early taxonomists classified all species as either plants or animals Later, five kingdoms were recognized: Monera (prokaryotes), Protista, Plantae, Fungi, and Animalia More recently, the three-domain system has been adopted: Bacteria, Archaea, and Eukarya The three-domain system is supported by data from many sequenced genomes The Universal Tree of Life The tree of life is constructed to show relationships of these domains: Bacteria, Archaea, and Eukarya molecular systematics continues to revise our understanding of the tree Fig. 26-21 Fungi EUKARYA...
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This note was uploaded on 01/20/2010 for the course BIO 50415 taught by Professor Batterton during the Fall '09 term at University of Texas at Austin.

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2BB lecture 9-25-09 bacteria - Chapter 26 (pp.552-553)...

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