This bacteria dichotomous key is a helpful scientific tool for identifying different organisms based on observable characteristics. Dichotomous keys comprise a series of statements, each with two options, that direct the user to the correct identification. In this example of a bacteria dichotomous key, Begin identifies unknown bacteria by examining their physical characteristics, such as cell wall, shape, and linkages. To narrow your identification, use standard laboratory procedures such as cell staining, culturing, and DNA sequencing. Bacteria are classified into species based on their physical and metabolic characteristics rather than their genetic relationships. Download EdrawMax today and create some wonderful dichotomous key diagrams that you can easily share with your students.