MICRB 201 Lecture Notes - Lecture 1: Microbiological Culture, Cell Culture, Beer Engine

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13 Sep 2017
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Introduction: biology: science of living organisms and their constituent parts, microbiology: traditionally, deals with small organisms, i. e. usually too small to be seen with unaided eye (need microscope) Includes both cellular andd acelluar lifeforms (fig 1. 2) iii: plasma membrane (every cell has one, virus (acelluar), e. g. hiv, bacteria, e. g. e. coli, protists, e. g, amoeba, fungi, e. g. mushrooms, yeast. There are ~ ten times more micrbes on the human body than human cells. Microbes generate most of the oxygen we breathe. To study microbes, they need to be grown as pure cultures : growth of a single species (colony) separate from others (slide 2) Field of microbiology can be defined based on two broad criteria: size: small organims. 2. 4 shows a relative size of organisms (slide 3) Note that some bacteria are huge (fig. Units of measurement: micron: methods of study: use of microbiological methods (fig 1. 16b) History: discovery of microbes; theory of spontaneous generation.

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