HTHSCI 2HH3 Lecture 1: Lecture 1 Intro to MicroBio Structure, Function, Reproduction & Classification of Microorganisms
20 Feb 2019
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Document Summary
Can live in good, neutral or -ve relationships. Commensalism: the commensal benefits; host is not harmed, nor benefits. These organisms exist within us e. g. e. coli in our gut produces vitamin k & helps with coagulation, in return we provide nutrients from our gut. Parasitism: parasitic microbe is dependent on host & benefits; host is harmed, disease may result. Organism thrives at our cost, we are harmed through disease. Includes all medically important microbes that cause illness in human hosts e. g. viruses, infection, fungi, parasites, bacteria. Antibiotics work against bacteria by exploiting differences b/w bacteria & host. Prokaryotic; no nuclei, single celled organisms, live singly, in pairs, chains, clusters. Acellular; not visible by light microscopy, obligatory microbes composed of genetic material surrounded by a protein coat. Do not make us as sick as bacteria because they are acellular & are not living organisms. Self living so body responds where possible & we get better on our own.
