lecture 7 - Microbes Breathe Microbial Cell Structure •...

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Unformatted text preview: Microbes Breathe Microbial Cell Structure • Monomers and Macromolecules Microbial Structure Goals • Intended outcomes – Recognize the structures of the monomers that make up the basic building blocks of the cell – Assign a function to a structural unit. Cytoplasm, nucleoid, membrane. – Realize that all cells are made of three things: nucleic acids, proteins and small molecules Cell - the basic unit • The basic unit of life • Membranes – Maintenance of a closed system – Barrier to the outside world – Sense and respond to environmental stimuli Cells • Made of the same basic chemical matter – proteins – nucleic acids -(DNA/RNA) – lipids – polysaccharides Cellular structures help achieve four tasks critical to survival • Feed • Replicate • Adapt • Evolve Paramecium bursaria and its symbiont alga These micrographs show the rhizoids (a), stolon (b), and zygosporangia (c) of Rhizopus, a fungus. Bacillus Bacillus Rhizobium Escherichia Mycoplas Cyanobacter Plantomyc Thermotoga The basic parts • Monomers (sugars, amino acids, purines, pyrimidines, etc) • Small molecules: e.g., coenzymes, cofactors • Macromolecules – DNA and RNA – Protein – Membranes Monomers • All small molecules that make up the rest of the cell • Building blocks • Only four basic kinds – Sugars – Amino acids – Purines and pyrimidines – Lipids Sugars (carbohydrates) • Purposes – Carbon and energy sources – Storage materials – Parts of other structures • (Cell walls, DNA, RNA, exopolysaccharide, capsule, etc) Sugar structures, names...
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This note was uploaded on 04/07/2009 for the course MICROBIO 303 taught by Professor Kaspar/escalnte/downs during the Spring '09 term at University of Wisconsin.

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lecture 7 - Microbes Breathe Microbial Cell Structure •...

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