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Discovery of Optical Activity
The earliest optically active substances were all inorganic like quartz, rock crystals and so on. Later crystals of potassium chlorate, potassium bromate and sodium periodate were also found to exhibit optical activity. However, when these crystalline inorganic and organic compo..
Active and Passive Immunity
Active Immunity - Active immunity develops as a result of the contact of an individual with pathogenic organisms or their products. They stimulate the body to produce antibodies in response to the antigens. The immunity thus produced is specific for a particular disease. For e.g..
Activation of Amino Acids
It is the step in which each of the participating amino acid reacts with ATP to form amino acid AMP complex and pyrophosphate. The reaction is catalyzed by a specific amino acid activating enzyme called aminoacyl-tRNA synthetase in the presence of Mg2+. There is a separate aminoacyl tRNA..
It is the step in which each of the participating amino acid reacts with ATP to form amino acid AMP complex and pyrophosphate. The reaction is catalyzed by a specific amino acid activating enzyme called aminoacyl-tRNA synthetase in the presence of Mg2+. There is a separate aminoacyl tRNA..Concept of Activation Energy
Concept of Activation Energy - For a reaction to occur, reactant molecules must collide with each other. Only those collisions result in product formation which have energy equal or more than a certain minimum energy. This energy is called the threshold energy. This implies that there is ..
Active and Passive Immunity
Active immunity develops as a result of the contact of an individual with pathogenic organisms or their products. They stimulate the body to produce antibodies in response to the antigens. The immunity thus produced is specific for a particular diseas..
Effect on Reproductive Activities
The photoperiod is known to affect breeding behavior of insects, certain birds and mammals. For example in some birds, gonads become active during summer. Starlings breed in spring (longer photoperiod) while deer breed in autumn (decreasing photoperiod..
Neutron Activation Analysis
This technique is of gaining importance in analytical chemistry. In this technique, the sample containing very small amount of the stable isotope of the element to be investigated is bombarded with neutrons. This element is activated into its radioactive isotope. The radioactivity of thi..
Reaction with other active metals
(formation of organometallic compounds) Haloalkanes react with other active metals such as lithium, zinc, mercury, lead, etc. in the presence of dry ether to form the corresponding organometallic compounds. For example, Tetraethyl lead (TEL) is used as an antiknocking agent in gasoli..
(formation of organometallic compounds) Haloalkanes react with other active metals such as lithium, zinc, mercury, lead, etc. in the presence of dry ether to form the corresponding organometallic compounds. For example, Tetraethyl lead (TEL) is used as an antiknocking agent in gasoli..Activity zone Animation
Boolean Algebra..
Boolean Algebra..Activity zone Animation Probability - I..
Probability - I..See what our Users say :
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