Essay On Microorganism

Introduction
In the past, it has been vital to distinguish the identities of microorganisms in the world. Knowing their identity has aided in diagnosing numerous diseases and has discovered the most beneficial treatment.

Lately, it has been vital to differentiate the identities of microorganisms worldwide. Recognizing their identity has aided in diagnosis numerous diseases and has discovered the most beneficial treatment. To study in microbiology, it is crucial for us to use microscope for microorganism observation. The microscope is an optical instrument that uses a lens or a combination of lenses to produce magnified image of small object. A light microscope can magnify images up to 1000x while electron microscopes can even magnify images more than 100,000x (Nester, 2001). As most of the microorganisms are transparent, staining techniques are used to make them visible such as simple stains and differential stains (Edward A. Birge, 1992).

At the end of experiment, we learned how to describe microorganisms' morphology.

Material

There are some kinds of characteristic such as coccus, bacillus, and spiral. The example of coccus could be such as Staphylococcus aureus, streptococcus and bacteria types-Gram stained. We can observe that these bacteria have purple colour because these bacteria having peptidoglycan to their cell wall. In Gram staining, the outer lipid-based membrane of gram-negative bacteria is removed by an alcohol solution. The alcohol also decolorizes the exposed peptidoglycan layer by dissolving away the previously applied crystal violet. A counterstain (safranin or fuchsine)is then added which recolorizes the bacteria red or pink. Then, the example for bacillus could be mixed bacillus-Gram stained. For the spiral can be