L9 ch 27,28,29,41

L9 ch 27,28,29,41 - Lecture 9: Chapters 27 (section 27.4),...

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Lecture 9: Chapters 27 (section 27.4), 28 (section 28.3), Lecture Guide 1. Overview: 2. Adaptations for Feeding: Prokaryotes Prokaryotes can be: Saprobes: decomposers that absorb nutrients from dead organisms Parasites: absorb nutrients from the body fluids of living hosts. Organisms with very specific nutritional requirements. Organisms with non-specific nutritional requirements. Almost any organic molecule, including petroleum, can serve as food for at least some species. Synthetic compounds that cannot be broken down by bacteria are said to be non-biodegradable. Obligate aerobes- must use oxygen Facultative aerobes- can use oxygen; but not necessary Obligate anaerobes- poisoned by oxygen Aerotolerant anaerobes- tolerate oxygen but do not use it Nitrogen Fixation in bacteria: 3. Adaptations for Feeding: Protists Heterotrophic: Phagotrophs—ingestive feeding
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This note was uploaded on 10/28/2011 for the course BIO 181 taught by Professor Milton during the Fall '08 term at N.C. State.

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L9 ch 27,28,29,41 - Lecture 9: Chapters 27 (section 27.4),...

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