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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.
Mas s Extinction - Since beginning many species evolved and got extinct (in fact only 1 % is living). Sometimes it occured suddenly at large scale, (most recently dinosa
simplified carbon cycle
Ehrlichiosis The disease is caused by a rickettisia, called Ehrlichia canis. Dogs and man are the reservoir hosts. The infection is transmitted through bite of infected tick, Rhip
Explain the Crestal Bone Levels Crestal Bone Levels: Bone levels should be assessed on the mesial and distal surfaces of implants. Any changes between visits should be documen
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Chromatin is made of DNA molecules associated to proteins known as histones.
Regarding the article "The DNA Transistor" which of the following is a false statement? A. The DNA transistor refers to the use of an electrical sensor to read one nucleotide a
Explain the Management of Renewable Resources? Since the human population has grown, human impacts on the resources that we use, like fisheries and forests, have continued to g
Define Classification of Carbohydrates - Degree of Polymerization? Classification on the basis of Degree of Polymerization (DP) Carbohydrates are classified by their degree
what are the types of autoclaves
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