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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.
Cryopreseravtion of gametes , embryos or DNA segments can be quite an effective and safe approach for breeds or strains whose populations are too small to be conserved by any other
Culture Medium - Techniques of Plant Tissue Culture In nature green plants are capable of synthesizing organic compounds necessary for their growth and development from the mi
Some plants and animals originate food contain toxic substances. Some pulses and legumes contain a number of toxic substances such as protease inhibitors, lathyrogens, and flavism
Explain about the physiology of eyelid movements. Physiology of Eyelid Movements: It is quoted that the eyelids move more than any other part of the body. The major movem
why their is different amount of yolk is present in eggs.
Minerals :- Phosphates Food Source Ubiquitous, animal products tend to be good sources Nutritional Functional role Essential nutrient: Deficiency is rare due
Q. Explain False Positive Tests? As ST depression has been equated with CAD, patients with this finding who have less than a critical coronary narrowing has been called false p
The human eye is an organ which reacts to light for various purposes. As a conscious sense organ, the mammalian eye permits vision. Cone and Rod cells in the retina allow conscious
List three ways that DNA technology could be used to improve the lives of humans. Answers could include: identifying human remains, determining a person's paternity, tracing h
Closed Style - Style of Stigma Interaction Cotton shows an epidermis with stomata, a cortex of thin-walled parenchyma with several vascular bundles and strands of transmitting
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