BIOL 101 LECTURE OUTLINE 3 - g ribosomes 2 Why are bacteria...

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C. DUONG BIOL 101: LECTURE OUTLINE / STUDY GUIDE Exams will include information discussed in lecture, presented in PowerPoint slides, and listed on the lecture outlines. : 1. 2. Understand how humans establish “resident microbes” in and on the body 3. Know the events of bacterial adhesion, colonization, and infection of a host organism 4. Describe mechanisms by which bacteria evade (escape) from host defenses 5. Understand how bacteria are classified and know examples of different types of bacteria discussed in lecture and the diseases they cause By the end of lecture, you should be able to answer the following questions : 1. What structures are present in a typical prokaryotic cell? Know their functions. a. pili b. capsule c. cell wall d. plasma membrane e. nucleoid region f. flagella
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Unformatted text preview: g. ribosomes 2. Why are bacteria good for you? a. What is normal bacterial flora (or resident microbes) and how is it established? b. What are some benefits of having normal flora on and in your body? 3. Why are bacteria bad for you? a. How do bacteria infect their hosts? Transmission Adhesion Invasion Colonization & biofilm formation Damage to host Exit from original host and transmission to another host b. How do bacteria evade (escape) host defenses? Capsule Exotoxins & endotoxins Endospores 4. What 3 shapes are used to classify bacteria? What are examples of diseases caused by each of the three major groups of bacteria? a. Cocci bacteria What is the difference between staphylo cocci bacteria and strepto cocci bacteria? Examples: Strep throat & bacterial meningitis b. Bacilli bacteria Examples: E. coli & anthrax c. Spirochete bacteria Examples: Lyme’s disease & syphilis p.1...
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