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Unformatted text preview: Controlling Bacteria by Damaging Cell Walls-The antibiotic penicillin blocks the final stages of peptidoglycan synthesis-the enzyme lysozyme, found in tears & other human body secretions, digests peptidoglycan (use penicillin to treat gram-positive bacteria) Wall Deficient Organisms-bacteria that belong to the genus-mycoplasma have no cell walls Ribosomes-Consist of ribonucleic acid and protein, serve as sites of protein synthesis-Abundant in the cytoplasm of bacteria-Often grouped in long chains called polyribosomes-70s in bacteria; 80s in eukaryotes-Streptomycin & Erythromycin bind specifically to 70s ribosomes and disrupt bacterial protein synthesis Inclusions-within the bacterial cytoplasm are a variety of small bodies: 1. Granules: not membrane bound and contain densely compacted substances (glycogen or polyphosphate) 2. Vesicles: specialized membrane-enclosed structures that contain gas or poly-(beta)- hydroxybutyrate (lipid) Endospores-A specialized resting structure found in bacteria such as Bacillus species and Clostridium species...
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This note was uploaded on 02/24/2011 for the course BIO 250 taught by Professor Datt during the Spring '09 term at South Carolina.
- Spring '09