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Explain the Gram Staining technique?
Gram staining is a differential staining procedure which divides bacteria into two groups: Gram positive and Gram negative, based on staining properties. The gram stain was developed in 1884 by the Danish Physician, Dr. Christian Gram. It is one of the most important and widely employed staining procedure in bacteriology.
It is very useful and is almost essential in identifying an unknown bacteria. The basis of gram staining is the difference in cell wall composition of two types of bacterial cells. Gram positives have thick cell wall, made up of multi-layered peptidoglycan with extensive cross-linking. On the other hand, gram negative cell wall has a very thin peptidoglycan layer surrounded by outer lipid rich outer membrane. There is no outer membrane in case of gram positives. This difference in cell wall leads to decolourization of gram negatives but not gram positives by decolourizing agent i.e., ethanol or acetone.
Proteins are very essential macromolecules as they have a range of many important functions like: • Required for building and repair of body tissues (including muscle) • Enzy
Classification of lipids A general classification of lipids based on their structural components is presented in table. Such a classification, however, is possibly too rigid f
Invasion or Migration - Ecology When a habitat is changed it can be a potential site for the establishment of many organisms. Many species actually invade or reach this new si
Q. Management of Gout? The goals of therapy or management of gout is based on the following aspects: • early resolution of inflammation, • prevention of recurrent attac
Length of the Implant Used The length of the implant to be used is dictated by the available bone height. The success rate is proportional to the implant length and the quality
How Poor Selection of Food causing the Underweight? Poor Selection of Food: Poor selection of food along with irregular eating habits may be responsible for insufficient food
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After Purchasing The following points should be considered for after purchase facilities. Avail of any training the software engineer or vendor may provide, even if it
What is the fuction of Starch Starch is the main thickener in gravies, sauces and puddings. Starch absorbs water, and becomes a gel when cooked. As the starch swells up with w
Urine Collection: Untimed or random urine specimens are suitable only for few chemical tests (mainly qualitative test). Usually urine sample is collected over a predetermined
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