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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.
How does the nervous system get information about the external environment, the organs and the tissues? Information about the conditions of the external and internal environmen
Q. Is there respiratory pigment in the annelid blood? The blood in beings of the phylum Annelida contains the respiratory pigment hemoglobin the same found in chordates and oth
Suppose a sample of 200 microliters of blood needs to be diluted 1/50. How much diluents should be added and what will be the final volume? Show all steps.
Determine some Dietary Sources of Vitamin C? Fruits (particularly citrus fruits), vegetables are the best sources of ascorbic acid. Amla is the richest source of ascorbic acid.
explain
Potato type: Potato A: Beginning displacement (ml)= Ending displacement (ml) = Potato B: Beginning displacement (ml)= Ending displacement (ml) = Potato type: Potato A: Beginn
is the have 100 nuclus ?
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WHAT ARE THE DIFFERENT CULTURE MEDIAS USED FOR ISOLATION OF ACTINOMYCETES?
Pericarditis Pericarditis is a syndrome caused by inflammation of the pericardium. Causes i) Infections Bacterial : Pneumococci, Staphylococci, Streptococci,
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