Artificial Synthesis of DNA
Artificial Synthesis of DNA on Template - In 1961, Kornberg and his coworkers synthesized DNA from a mixture of deoxyribonucleoside triphosphates, DNA polymerase enzyme, metal ions and a segment of viral DNA functioning as a primer. The synthetic DNA showed biological activity. ..
Artificial Synthesis of DNA
In 1961, Kornberg and his coworkers synthesized DNA from a mixture of deoxyribonucleoside triphosphates, DNA polymerase enzyme, metal ions and a segment of viral DNA functioning as a primer. The synthetic DNA showed biological activity. When introduced into bacteria, this DNA coded ..
Uses
In the manufacture of soap, paper, viscose rayon (artificial silk), organic dyestuffs, and many other chemicals In the refining of petroleum and vegetable oils In the purification of bauxite for the extraction of aluminium As a cleansing agent and in washing powder for machines, ..
Elements
Elements - "An element is a pure substance which is made up of only one kind of atoms having the same atomic number." "The smallest particle of an element is the atom which, has all the properties of that element." "An element cannot be broken down into simpler substances b..
Uses
Nitric acid has important commercial applications. It is used in: The manufacture of important fertilizers such as ammonium nitrate and basic calcium nitrate. The manufacture of explosives like T.N.T, nitroglycerine, etc. Rocket propellants: as an oxidizer. Manufacture of artificial silk,..
Applications
(i) Radioactive dating This gives us an approximate age of the rock or material containing the radioactive atoms. For e.g., A measurement of a fraction of uranium atom which have decayed into lead (by knowing the half life of uranium) tells us how old the rock is. (ii) Radiation from space conve..
Advantages of Using Solar Cells
Advantages of Using Solar Cells - It is present in abundance They have no moving parts and hence require little maintenance and work quite satisfactorily without any focusing device It does not cause any environmental pollution like the fossil fuels and nuclear power Solar cells last a longer time ..
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