HTHSCI 2HH3 Lecture Notes - Lecture 1: Superoxide Dismutase, Gram Staining, Carbol Fuchsin
22 May 2015
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Document Summary
Commensalism, the host neither benefits nor is harmed. Mutualism, obligatory and dependent, both members benefit, ex. Parasitism, dependent on the host to live, host is harmed and can cause disease. Have fimbria for motility and adhesion (selective to binding to what is conducive to growth and survival) Ribosomes make proteins, inclusions store nutrients, flagellum allows for movement. Cell membrane and wall, capsule or slime layer. Some microbes are so small they can enter without a break in the skin. Single celled organisms no nucleus, single double stranded dna loop, possess smaller separate circles of plasmids, ribsosomes are smaller than those of eukaryotes, have a cell wall and cell membrane, external cellular structures (flagella, pili) Differences between prokaryotes (bacteria) and eukaryotes (humans) can be exploited as they are in antibiotics, antibiotics can target cell wall components or the smaller ribosomal subunits to kill bacteria but not our cells. Cell morphology shape, arrangement, colony morphology, external structures, capsules, spore formations.
