MMG 301 Study Guide - Final Guide: Limiting Factor, Microorganism, Protein Structure
17 Jul 2019
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Document Summary
Would happen if all microbes in a population were to enter the log phase at precisely the same time and took exactly the same amount of time to divide. Logarithmic growth cannot be maintained forever as resources are limited and do become depleted. A chemostat is a device that brings a continous infusion of fresh medium to a growth chamber to maintain the bacterial population in log growth. # of cells produces = # of cells dying, therefor no increase in population size will occur. At this point nutrients are limited/depleated, wastes/toxins are more concentrated and 02 levels may be inadequate or suboptimal. Is possible to prolong this phase and advert death by producing endospores. Population of bacteria decline, conditions have worsened now more cells die than are being produced (cell division is still occuring in other cells) Number of live cells decline at a logarithmic rate. Many cells acquire odd shapes that make them hard to id.
