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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.
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write about asexual reproduction in mucor?
Q. What is Echocardiography in pericardial diseases? Ans. One of the earliest clinical applications of echocardiography was in the detection of pericardial effusion and it rema
WAXES These are monoglyceride compounds. They are chemically inert (due to absence of double bonds) and insoluble in water. On heating they become soft and pliable
which organs are involved in respiration of annelid and what is it called ,what by products are formed and how amount of ATP is released?
Explain Precautions for Estimation of Sucrose by Fehling Soxhlet Method? 1. Maintain proper temperature of the water bath for complete hydrolysis. 2. Add distilled water to
Q. What is the difference between respiration by cutaneous respiration and diffusion? Does blood participate in cutaneous respiration? Cutaneous respiration is not as simple as
Perception of Light - Floral Induction Stimulus Leaves are found to be organs that perceive light 'stimulus', K.C. Hamner and J. Bonner showed in 1938 that even if all the lea
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