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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.
Define Measuring cylinder - Nutritional Biochemistry? It is used for measuring those reagents which need not be added in very accurate volumes. Strong acids and alkalis are add
write a comprehensive note on vitamins?
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Transgenic Animal Over the centuries, animals with new combinations of genes have been produced using conventional breeding methods by means of careful selection of particular
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Define the Phytate and Protein Interaction? You may be more familiar with phytate's role in mineral absorption. However phytates also bind with starch and protein. Depending on
What's the difference between theory and hypothesis and explain the importance for a hypothesis to be testable and falsifiable in order for the scientific method to be applied?
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