However, since there are many "doubles" ...

On >> << Created: July 21, 2008

Last Updated: October 6, 2009

unicellular organisms bacteria, in every habitat on Earth. Almost all of them have cell walls composed of peptidoglycan and reproduce by dividing (cloning of cells). Although many of these microbes are harmless or beneficial to humans and other pathogens that cause infectious diseases. A. The shape of individual bacteria. Two. Whether the bacteria exist in specific groups. Three. colony morphology (appearance of "colony", a group of millions of bacteria that have arisen from a single cell parents). ~ Sticks (pl. bacilli) = rod

~ cocci (pl. cocci sounds like COX-eye) = spherical

~ spirillum (pl. spirilla) = spiral

= ~ vibrios short, slightly curved rods, bacteria

sometimes occur in groups rather than individually, and the shape of a cell affects the cells of the measures which they form, as a bacterial cell strattera 10mg to divide. Bacilli divided along one axis, and are sometimes seen in pairs or chains. Since they are only divided along one axis, you will not find bacteria in clusters, such as formed by Staphylococcus bacteria. Cocci divided into one or more planes, producing cells in the

size, shape and arrangement of cells, are often the first clues to the identification of bacteria. However, since there are many "doubles", and other microscopy techniques than they should be used to determine the genus and species of the organism. Bacterial populations are growing very rapidly when they are supplied with nutrients and environmental conditions that allow them to flourish. With this growth, the different types of bacteria sometimes produce colonies that are distinctive appearance. In some colonies can be painted, some are round, while others regularly. Characteristics of the colony (shape, size, color, etc.), referred to as "the morphology of the colonies." Colony morphology, scientists can identify bacteria. There are several basic characteristics of the morphology of the colonies, which are usually evaluated. A. Form - What is the basic form of the colony? For example, circular, filamentous, etc. Two. Height - What is the cross-sectional shape of the colony? To see this, turn the petri dish at the end. Three. Margin - What is the form of increased edge of the colony? 4. Surface - How does the surface of the colony appear? For example, smooth, shiny, rough, blunt (as opposed to shiny), rugose (wrinkled), etc. Five. Opacity - There is a colony of translucent (clear), are opaque, translucent (almost clear, but distorted vision, like looking through frosted glass), iridescent (changing colors in reflected light), etc. 6. Chromogenesis (pigmentation) - for example, white, buff, red, purple, etc. Bauman, R. (2005) Microbiology. Pearson Banjamin Cummings. Park Talaro, K. (2008) framework in the field of microbiology. McGraw-Hill. Learn more about this author. Click here to send author comments or questions. .