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Bacterial Transformation

  Bacterial Transformation Bacterial transformation is a process in which a bacterial cell takes up foreign or naked DNA from its surrounding environment and incorporates it into its own genetic material. This results in the acquisition of new genetic characteristics by the bacterial cell. Transformation is one of the major mechanisms of horizontal gene transfer in bacteria, along with conjugation and transduction. It plays an important role in bacterial evolution, adaptation, and genetic diversity. It is also widely used as an important technique in molecular biology and biotechnology. Discovery of Bacterial Transformation The phenomenon of bacterial transformation was first discovered by Frederick Griffith in 1928 while studying Streptococcus pneumoniae. He worked with two types of bacterial strains: the Smooth (S) strain and the Rough (R) strain. The S strain possessed a polysaccharide capsule and was pathogenic, whereas the R strain lacked a capsule and was non-pathogen...

Cytisine for smoking cessation

  Cytisine for smoking cessation Abstract Cigarette smoking is the one of the major risk factor for human health. The treatment of smoking addiction is changing rapidly through different natural and artificial substances. Among them Cytisine is playing one of the major role. Cytisine, also known as baptitoxine and sophorine , is an alkaloid that occurs naturally in several plant genera , such as Laburnum and Cytisus of family Fabaceae and usually extracted from the seeds of those plants. Cytisine is an acetylcholine  agonist , and has strong binding affinity for the nicotinic acetylcholine receptor. Cytisine plays the part of a nicotine- substitute substance which decreases the period of interaction between nicotine and the corresponding receptors. This in turn leads to a gradual decrease and interruption of the smoker’s psychic and physical nicotine dependence. The use of cytisine for smoking cessation remains relatively unknown outside Eastern Europe. This review is about th...

STUDY ON MICROBIAL ENZYMES DEGRADING LIGNOCELLULOSIC FOOD WASTE AND IN BIOREMEDIATION OF POLLUTANTS

  STUDY ON MICROBIAL ENZYMES DEGRADING LIGNOCELLULOSIC FOOD WASTE AND IN BIOREMEDIATION OF POLLUTANTS Abstract The lignocellulosic food waste from agro-industries (sugarcane baggage, apple pomace, rice bran) are discarded or used as fodder. The pomaces and baggage can contain moisture as high as, up to 75%. Added up with high chemical oxygen demand and biological oxygen demand are prone to causing major environmental and health problems. Microbial enzymes (Trichoderma reesei, Aspergillus niger, Viscozyme L, Celluclast 1.5L, cellobiohydrolases, bacterial amylase, endoglucanases and b-glucosidase) working in synergy can hydrolyse the wastes at a faster rate than traditional methods producing invertase that can be used as industrial sweetener and also as a biofuel or in production of chemicals for biorefineries. Bioremediation is a technique of using microbial enzymes to recycle wastes or degrade pollutants with the help of biotechnology, such that they can be reused by...

SCIENTIFIC LAWS

  SCIENTIFIC LAWS   Archimedes’ Principle:  It states that a body, when immersed in a liquid, experiences an upward thrust equal to the weight of the liquid displaced by it. Avogadro’s Hypothesis:  It is a modification of Berzelius‘ hypothesis. It states that equal volumes of all gases under similar conditions of temperature and pressure contain equal number of molecules. Avogadro‘s law is applicable only to gases. Boyle’s Law:  states that the volume of certain gas is inversely proportional to the pressure at a constant temperature. In other words the product of pressure and volume remains constant provided the temperature is kept constant i.e., P x V = a constant if T remains the same. Charles’s Law:  It states that at constant pressure all gases expand by 1/273 of their volume at 0°C for a rise in temperature of 1°C i.e., the volume of a given mass of gas at constant pressure is directly proportional to the absolute temperature. Dulong and Petit’s Law:...

āĻŦ্āϝাāĻ•āϟেāϰিāϝ়া āĻ•োāĻļেāϰ āĻ—āĻ āύ

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    āĻŦ্āϝাāĻ•āϟেāϰিāϝ়া āĻ•োāĻļেāϰ āĻ—āĻ āύ āĻŦ্āϝাāĻ•āϟেāϰিāϝ়া āĻšāϞ āĻāĻ•āĻ•োāĻļী āĻĒ্āϰােāĻ•্āϝাāϰিāĻ“āϟিāĻ• āϜীāĻŦ। āĻāĻĻেāϰ āĻ•োāĻļ āĻ—ােāϞাāĻ•াāϰ (āĻ•āĻ•্āĻ•াāϏ),āĻĻāĻŖ্āĻĄাāĻ•াāϰ (āĻŦ্āϝাāϏিāϞাāϏ), āϏāϰ্āĻĒিāϞাāĻ•াāϰ (āϏ্āĻĒাāχāϰিāϞাāĻŽ) āĻāĻŦং āĻ•āĻŽা āφāĻ•ৃāϤিāϰ (āĻ•োāĻŽা) āĻšāϝ়। āĻŦাāχāϰেāϰ āφāĻ•ৃāϤি āύাāύাāϧāϰāύেāϰ āĻšāϞেāĻ“ āĻāĻĻেāϰ āĻ•োāĻļেāϰ āĻ—āĻ āύ āĻŽােāϟাāĻŽুāϟি āĻāĻ•āχ āϰāĻ•āĻŽেāϰ āĻšāϝ়। āĻ•োāĻļ āύিāĻŽ্āύ āϞিāĻ–িāϤ āĻ…ংāĻļ āύিāϝ়ে āϤৈāϰি āĻšāϝ়ঃ (ā§§) āĻ•োāώāĻĒ্āϰাāϚীāϰ  āĻŦ্āϝাāĻ•āϟেāϰিāϝ়া āĻ•োāĻļেāϰ āĻŦাāχāϰে āĻāĻ•āϟি āĻĻৃāĻĸ় āĻ•োāĻļāĻĒ্āϰাāϚীāϰ āĻĨাāĻ•ে। āĻāϟি āĻĒুāϰু āĻšāϝ়। āĻāϤে āϤিāύāϟি āϏ্āϤāϰ āĻĨাāĻ•ে। āĻāĻ•েāĻŦাāϰে āĻŦাāχāϰেāϰ āϏ্āϤāϰāϟি āϞিāĻĒােāĻĒāϞিāϏ্āϝাāĻ•াāϰাāχāĻĄ āĻĻিāϝ়ে āϤৈāϰি।āĻŽাāĻāĻ–াāύেāϰ āϏ্āϤāϰāϟি āĻŽিāωāĻ•োāĻĒāϞিāϏ্āϝাāĻ•াāϰাāχāĻĄ āĻĻিāϝ়ে āϤৈāϰি। āĻāĻ•েāĻŦাāϰে āĻ­িāϤāϰāĻ•াāϰ āϏ্āϤāϰāϟি āĻĒেāĻĒāϟাāχāĻĄােāĻ—্āϞাāχāĻ•্āϝাāύ āĻĻিāϝ়ে āϤৈāϰি। āĻ—্āϰাāĻŽ āĻĒāϜিāϟিāĻ­ āĻŦ্āϝাāĻ•āϟেāϰিāϝ়াāϤে āĻ­িāϤāϰেāϰ āϏ্āϤāϰāϟি āϏāĻŦāϚাāχāϤে āĻĒুāϰু āĻšāϝ় āφāϰ āĻŦাāĻ•ি āĻĻুāϟি āϏ্āϤāϰ āĻĒাāϤāϞা āĻšāϝ়। āĻ—্āϰাāĻŽ āύেāĻ—েāϟিāĻ­ āĻŦ্āϝাāĻ•āϟেāϰিāϝ়াāϤে āϤিāύāϟি āϏ্āϤāϰāχ āϏāĻŽাāύ āĻĒুāϰু āĻšāϝ়। āĻ­িāϤāϰāĻ•াāϰ āϏ্āϤāϰāϟিāϤে āĻ…্āϝাāϏিāϟাāχāϞāĻ—ুāĻ•োāϏাāĻŽাāχāύ āĻāĻŦং āĻ…্āϝাāϏিāϟাāχāϞ āĻŽুāϰাāĻŽিāĻ•āĻ…্āϝাāϏিāĻĄ āĻāχ āĻĻুāϰāĻ•āĻŽেāϰ āĻ…্āϝাāĻŽিāύােāϏুāĻ—াāϰ āĻĨাāĻ•ে। āĻĒেāĻĒāϟাāχāĻĄেāĻ…্āϝাāϞাāύিāύ, āĻ—্āϞুāϟাāĻŽিāĻ•āĻ…্āϝাāϏিāĻĄ, āĻĄাāχ āĻ…্āϝাāĻŽিāύাে āĻĒিāĻŽেāϞিāĻ• āĻ…্āϝাāϏিāĻĄ āĻāĻŦং āĻ—্āϞাāχāϏিāύ āĻĨাāĻ•ে। (⧍) āĻ•āϰ্āώিāĻ•া āϏāϚāϞ āĻŦ্āϝাāĻ•āϟেāϰিāϝ়াāϰ āĻ•োāĻļāĻĒ্āϰাāϚীāϰেāϰ āϏāĻ™্āĻ—ে āϏুāϤােāϰ āĻŽāϤাে āĻ•āϰ্āώিāĻ•া āϝুāĻ•্āϤ āĻĨাāĻ•ে।āĻāĻ—ুāϞি āϞāĻŽ্āĻŦাāϝ় 4-5 mm āĻšāϝ়। āĻāϰ āϤিāύāϟি āĻ…ংāĻļ। āϤāϞাāϰ...

GLOSSORY MEDICAL BIOTECHNOLOGY

  GLOSSORY MEDICAL BIOTECHNOLOGY   Amino Acids:  The building blocks of proteins. The unique sequence of amino acids in a chain defines the character of a protein molecule.   Angiogenesis:  The process by which the body forms and develops new blood vessels. Angiogenesis can be both beneficial and harmful; while it can be used to stimulate development in new blood vessels to fight clogged arteries, it also allows malignant tumors to increase in size. Angiogenesis is a key area of cancer research.   Antibody:  A component of the body’s immune response.A Y-shaped protein, it is secreted in response to an antigenic stimulus. It neutralizes the antigen by binding to it.   Antigen:  Any substance, almost always a protein, not normally present in the body that when introduced to the body stimulates a specific immune response and the production of antibodies.   Apoptosis:  The process of programmed cell death that may occur in multicellular...