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Unformatted text preview: Different organelles within a cell can be observed because subtle staining differences occur between one organelle or cell and another Since cells are motile so the interaction between cells can be easily observed Transparent microorganisms The natural color of the cell can be witnessed The quantity of cells can be more accurately counted because of the lack of motility 8) Advantages of OD measurements Advantages of direct count Simple and faster process: take a sample, press button to measure O.D. and discard the sample More accurate estimate when counting in a homogeneous mixture Less work needed Cheaper to stain and count than to spend money on spectrophotomers. Cost and time efficient Not in direct contact with the bacteria while counting so much safer process Reduces strain on eyes from looking through a microscope Less chances of error, most work is done by the spectrophotometer...
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This note was uploaded on 10/31/2009 for the course BIO 205L taught by Professor Hanson during the Spring '07 term at University of Texas at Austin.
- Spring '07