Exersise 12.2 - Examination of Bacterial Colonies

LEVEL I

Materials

Procedure

  1. Obtain an established culture. Note that the bacteria grow in clearly defined groups, known as colonies. In most cases, each colony is the outgrowth from an individual cell, although they may overlap if excessive numbers of cells were plated.

  2. Visually examine the individual colonies of bacteria and describe them according to the following characteristics:

  3. Determine and record the identity of your colonies.


Colony 1
Colony 2
Colony 3
Colony 4
Size




Shape




Margins




Consistency




Color




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Cell Biology Laboratory Manual
Dr. William H. Heidcamp, Biology Department, Gustavus Adolphus College,
St. Peter, MN 56082 -- cellab@gac.edu