5_outline_bio119_nutrition

5_outline_bio119_nutrition - Lecture 5 Nutrition/Transport...

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Unformatted text preview: Lecture 5 Nutrition/Transport I. Nutrition A. Modes of growth (the “trophs”) 1. Autotrophs 2. Phototrophs 3. Chemotrophs 4. Combinations a) Chemoheterotrophs b) Photoautotrophs c) Chemoautotrophs 5. Obligate and facultative (Box 5.2) B. What does a cell need to grow? 1. First let's see what cells are made of: 2. Composition of cells (Table 5.1) 3. C, O, N, H, S, P 4. Salts 1 Bio119 Lecture 5 Nutrition/Transport Bio119 5. Trace elements 6. Growth factors II. How do prokaryotes get their nutrients? A. By transporting it in B. Cytoplasmic membrane is selectively permeable C. Diffusion (Fig. 5.2) D. The role of active transport 1. Secondary transporters (Fig. 5.4) a) Uniporters b) Symporters (Fig. 5.5) c) Antiporters 2. Group translocation (Fig. 5.6) 2 Lecture 5 Nutrition/Transport Bio119 3. ABC Transporters (Fig. 5.3) a) Iron uptake example (Fig. 5.8) III.How to grow bacteria: A. Most prokaryotes cannot be cultured in the lab B. Culture medium 1. Complex 2. Defined (Table 5.2, what’s missing?) 3. Carbon source 4. Energy source 5. Solid vs. liquid 3 Lecture 5 Nutrition/Transport 6. Sterilization methods 7. Aseptic techniques C. Acidity and alkalinity 1. Halophilic (Fig. 6.17) 2. Acidiphilic vs. alkaliphilic 3. Haloalkaliphilic D. Oxygen 1. Aerobes (obligate/strict vs. facultative) 2. Microaerophiles 3. Anaerobes (obligate/strict vs. aerotolerant) 4 Bio119 Lecture 5 Nutrition/Transport 4. Oxygen toxicity 5. Anaerobic growth (Fig. 6.14) E. Temperature (Fig. 6.15 and 6.16) 1. Cardinal temperatures 2. Psychrophiles 3. Mesophiles 4. Thermophiles 5. Hyperthermophiles 5 Bio119 Lecture 5 Nutrition/Transport 6. Examples (Table 6.3) 6 Bio119 ...
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This note was uploaded on 12/05/2011 for the course BIO 119 taught by Professor Chadsaltikov during the Fall '08 term at BYU.

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5_outline_bio119_nutrition - Lecture 5 Nutrition/Transport...

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