SLE234 Study Guide - Final Guide: Microbiological Culture, Animalcule, Cell Plate
17 May 2017
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Week 1: history of microbiology, microscopy and staining. Major groups of microorganisms: algae, fungi, protozoa, bacteria, blue-green algae. (archaea) Cell types: eukaryotes, the genetic material (dna) is enclosed within a nucleus, possess functional compartments (organelles, prokaryotes, do(cid:374)(cid:859)t ha(cid:448)e the dna e(cid:374)(cid:272)losed i(cid:374) a (cid:373)e(cid:373)(cid:271)(cid:396)a(cid:374)e, do(cid:374)(cid:859)t ha(cid:448)e o(cid:396)ga(cid:374)elles. The three domains of life: bacteria, archaea and eukarya. History of microbiology: originally thought to be via spontaneous generation (idea that non-living material can give (cid:396)ise to li(cid:448)i(cid:374)g o(cid:396)ga(cid:374)is(cid:373)s(cid:895). Was late(cid:396) des(cid:272)(cid:396)i(cid:271)ed as (cid:862)a(cid:374)i(cid:373)al(cid:272)ules(cid:863) a(cid:374)d (cid:271)elie(cid:448)ed that o(cid:396)ga(cid:374)is(cid:373)s a(cid:396)ose f(cid:396)o(cid:373) p(cid:396)e-existing ones (biogenesis). The germ theory of disease: only one type of bacterium is able to cause a specific disease. Measurements of microorganisms: micrometer ( m): 10-6m, nanometer (nm): 10-9m, angstrom (a): 10-10m. These are used for measuring light wavelengths: most bacterial cells are between 0. 5 m to 1. 0 m in diameter. Magnification: microscopes effectively increase retinal surface area occupied by image. Magnification is determined by multiplying magnifications of objective and ocular lenses.
