BIOL130 Study Guide - Final Guide: Transmission Electron Microscopy, Antonie Van Leeuwenhoek, Scanning Electron Microscope
8 Feb 2014
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Document Summary
300x magnification via microscope: dubbed the father of microbiology , leeuwenhoek observed single-celled animal species (animalcules) The cell is the basic unit of life. All living things are comprised of cells. Allows us to look at the surface of a cell in 3d: transmission (tem transmission electron microscopy) Allows us to see a cross-sectional (2d) cut of the cell to see the inner workings of the cell. The central dogma: all cells follow the same central dogma, dna replication rna transcription protein translation. All have cell walls except for mycoplasma. Scale of size: mycoplasma (smallest) --------------> cyanobacteria (most complex: cyanobacteria are capable of carbon and nitrogen fixation, archaebacteria (archae): Possess genes and several metabolic pathways that are more closely related to those of eukaryotes. Best known are extremophiles, but other prominent species are: halophiles (great salt lake, dead sea, acidophiles, themophiles (source of taq polymerase)
