MGY277H1 Lecture Notes - Lecture 1: Koch'S Postulates, Louis Pasteur, Nucleoid
13 Sep 2018
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Document Summary
Lots of microbes are becoming resistant to treatments that already exist: older viruses (e. g. influenza) learn to become more virulent, disease containment nowadays is difficult because of our modern systems of trade and travel. Gap in healthcare: the persistent gap in health between rich and poor countries, this gap allows for a prevailing problem for infectious disease int eh developing world. What is microbiology microbiology: study of microbes: general term that refers to very small living cells and non-living viruses (e. g. prions) Microbes are not all harmful: no microbes = no oxygen, agriculture (plants need to nitrogen in the air into organic forms of nitrogen, microbes are also useful in food production. Types of microbes: there are three main domains, prokaryotes, bacteria, archaea, eukarya. Prokaryotes: physical characteristics: single-celled, no membrane-bound organelles, dna is packed in the cytoplasm as a nucleoid, motility - have flagella that is different from eukaryotic flagella, non-physical characteristics: divide through binary fission.
