lablecture2-f-09

lablecture2-f-09 - Turn in worksheet #1 at beginning of...

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± Turn in worksheet #1 at beginning of class. ± Lab Manual available at Davis Copy Shop (231 3 rd St) at 8:00 AM on Tues. 10/6. Minus first 5 labs. ± Lab 4 handed out last week and Lab 5 available in lab tomorrow and on line later today. ± Lab practicals : ± First Microscope Practical – by end of Lab 7 ± Streaking Practical – by end of Lab 7 ± First Gram Stain Practical, 2 nd Microscope Practical, 2 nd Gram stain Practical, later. Full schedule on syllabus tomorrow in Lab.
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Microbiology 102L Bacterial Growth Calculations October 5, 2009
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Bacterial Growth: Binary Fission
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Graphing bacterial growth
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Comparison of plotting methods Arithmetic scale Arithmetic scale Logarithmic scale Logarithmic scale
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Exponential phase of growth Definition: A period during the growth cycle of a population in which cell number increases at an exponential rate. z During this period, growth is NOT restricted by the concentration of nutrients and toxic compounds have not accumulated. z Only the quality of the nutrients is restricting growth.
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is autocatalytic z During exponential phase, growth is autocatalytic z This means growth depends only on the concentration of cells. z Restated, the change in cell number ( δ N) over time ( δ t) is proportional to the existing cell number (N). z
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lablecture2-f-09 - Turn in worksheet #1 at beginning of...

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