BLG 151 Chapter Notes - Chapter 1: Rickettsia, Micrographia, Phytophthora Infestans

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12 Nov 2014
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What is the importance of microorganisms: most populous and diverse group of organisms, found everywhere on the planet, play a major role in the recycling of essential elements, source of nutrients and some carry out photosynthesis, benefit society by the production of food, beverages, antibiotics and vitamins, some can cause diseases in plants and animals. Cellular organisms include: fungi(cid:224)e. x: yeast and mold, protists(cid:224) ex: algae, protozoa, and slime mold, bacteria(cid:224) ex: escherichia coli, archaea(cid:224)ex: methanogens. A cellular microorganisms include: viruses (cid:224) made of protein and nucleic acid, viroids(cid:224) made of rna, satellites(cid:224) made of nucleic acid and often rna, prions(cid:224) made of proteins. Types of microbial cells: prokaryotic cells, lack a membrane bound nucleus, however this is not absolute, eukaryotic cells, has a membrane bound nucleus, complex morphology, larger than prokaryotic cells. Studies by carl woese on different rrna sequencing showed the difference between two groups of prokaryotes: bacteria, archaea, bacteria, archaea, eukarya.

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