ENH 222 Study Guide - Midterm Guide: Transmission Electron Microscopy, Scanning Electron Microscope, Gram Staining

• School: Ryerson University
• Department: Environmental Health
• Course: ENH 222
• Professor: Corrine Ong

Document Summary

Goldenage milestone dates 1665: hooke- 1st observation of cells- coined term. Confirmed van leeuwenhoek"s observation. 1673: van leeuwenhoek- 1st observation of live microorganisms. 1735: linnaeus- nomenclature. 1798: jenner- 1st vaccine (smallpox). 1857: pasteur- fermentation. 1861: pasteur- disproved spontaneous generation. 1864: pasteur- pasteurization. 1867: liser- aseptic surgery using phenol to disinfect surgical wounds. 1876: koch*- germ theory of disease. Goldenage ends 1890: von bering*- diphtheria antitoxin and ehrlic*- theory of immunity. Initials can be used. (e. coli, s. aueus). Both: either italicized or underline example: staphyl- cluster arrangement. coccus: sphere shape. aur: latin for golden. Moulds & mushrooms: multicellular, masses of mycelia composed of filaments called hyphae. Cellulose cell walls. reproduce asexually or sexually. protozoa- eukaryotes nuclear membranes. Dna or rna core surrounded by protein coat. Pasteur"s work: fermentation is by yeasts that convert sugar to alcohol during brewing. Spoilage is by bacteria that turns sugar and/or alcohol into acid. Pasteurization heat for a short time to kill spoilage bac. Koch a specific microbe causes a specific disease.