Review sheet for Exam III

Review sheet for Exam III - Review sheet for Exam III. I am...

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Review sheet for Exam III. I am supplying this review sheet to help you recall what we have discussed in class. The test questions will cover materials we discussed in class and assignments (study guides) you did for each topic. You are expected to use what you learn in class to solve problems or you may be asked to explain phenomena using principles you learn from class. The concepts I hope you should understand are provided in this review sheet. A, Bacteria. 1, the difference between Gram positive and Gram negative bacteria in terms of the cell wall structure. A gram positive bacteria will have a thick layer of peptidoglycan (a sugar-protein shell) that the stain can penetrate. A gram negative bacteria has an outer membrane covering a thin layer of peptidoglycan on the outside. The outer membrane prevents the initial stain from penetrating. Ester Linkages 2, You should understand the different mechanisms of penicillin and lysozyme in killing Gram positive and Gram negative bacteria. Penicillin: Most effective against gram positive because prevent synthesis of peptidoglycan. Lysozyme: Effective against gram negative and breaks down outer membrane. 3, Understand the different mechanisms antibiotic resistance in bacteria develops. Conjugation: Plasmid to plasmid through bridge (sex pili) Transformation: DNA is freely floating from dead cell and living cell picks it up Transduction: Delivery by phage 4, Understand how bacteria mate, why they mate. Think about antibiotic resistance development. Make sure you are aware of plasmids that carry antibiotic resistant genes spread through conjugation or
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This note was uploaded on 09/20/2011 for the course BMZ 115 taught by Professor Cheng during the Spring '11 term at Miami University.

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Review sheet for Exam III - Review sheet for Exam III. I am...

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