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Microbial Growth
BMB 300
| Question | Answer |
|---|---|
| Microbial Growth | The increase in cellular constituents (pop. increas) 1 cell -> 2 cells |
| Binary Fission | 1 cell -> 2 cells |
| Steps of Binary Fission | |
| Z-Ring | A protein ring that divides the cell during binary fission by constriction |
| Standard Bacterial Growth Curve | Lag phase, Expon Phase (aka Log phase), Stationary phase, Death phase. |
| Lag Phase | Delay in growth due to acustomizing to new nutrients.no increase in organism #scell is replenishing and adapting to new conditions |
| Exponential Phase | aka Log PhaseRate of Growth is constant (the org that is in contact with nutrient grows)Generation time is shortest |
| Stationary Phase | No growth: no nutrients, too much wastestarvation response |
| Starvation Response | Morphological Changesi.e. endospore formation (long term survival) |
| Death Phase | Cells die at an exponential rate1. no nutrients, external influences, etc.2. Programmed Cell death |
| Programmed cell death | A cell after a certain 't' will lyse! |
| Cell Pop. Calculation dependent on 't' | Nt = N(2n) |
| Photo- (get there energy from) | Sun |
| Chemo- (get their energy from) | Oxidation of Organic or Inorganic Compounds |
| Energy sources | Photo- or Chemo- |
Created by:
zkormendy
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