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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.
Explain about the Classification of Fungi? The fungi, as you may recall reading above, is now placed in a separate kingdom called Myceteae. Traditionally, fungi were divided in
Respiration - Metabolism of Pollen Tubes In the unpollinated pistils of Hippeastrum hybridum very high O 2 , tension exists from stigma down through most of the style. During
What are the phytoplankton and the zooplankton? The Phytoplankton and the zooplankton are divisions of the plankton. The phytoplankton includes the autotrophic floating beings:
Define Phenolic Acids and Derivatives? Two families of phenolic acids are widely distributed in plants: a range of benzoic acid derivatives and those derived from cinnamic acid
What is Human Glucose Transporters (GLUT)? All GLUTS are the integral proteins, which penetrate and span the lipid bilayer of plasma membrane. Six isomers of GLUT have been des
When the overlap between the thin and thick filaments of a sarcomere in a skeletal muscle is decreasing, A. the total length of the I band is increasing in the sarcomere. B.
What do you determine by Atriopore? The external opening to atrium. In cephalochordates water passes across pharyngeal slits into atrium and from there leaves through atriopore
why fishes are known as pisces
Q. Discovery of insulin? The discovery of insulin has dramatically changed the lives of people having type 1 diabetes. With this wonder drug diabetics can lead a normal, enjoya
Q. In which bones can bone marrow chiefly be found? Is the bone marrow made of osseous tissue? Bone marrow can mainly be found in the internal cavities of flat bones, like the
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