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Why is it advantageous to have weak hydrogen bonds among complementary bases and strong covalent bonds among phosphate and Deoxyribose groups in a DNA molecule?
The hydrogen bonds break simply, making it easier for the two strands in the molecule to separate during replication. The strong covalent bonds ensure that the sequence of nucleotides remains fixed in every strand.
Decay and Nutrient Cycling Soil organisms are the chief agents of decay of organic matter. Decomposition and mineralisation of organic matter results in release of inorganic nu
Tuberculosis Tuberculosis (TB) is an ancient disease of man, animals and birds. It is an infectious disease, characterized by slow development of tubercles in almost any organ
Give one example in each case of the usefulness of bacteria in (a) a natural environment, (b) an industrial process. (a) In a natural environment bacteria brin
Q. Show the Paleobotanical Evidence? Paleobotany deals with the study of fossil records of plants and animals. New techniques and approaches to the study of fossil flowering pl
The oxidation of sugar in the cell of higher organisms takes place in the ?
DIFFERENT PHASES OF SPERMATOGENESIS Spermatogenesis complete into two phases. 1 . Spermatocytogenesis The entire process can be divided into three phases : (i
Q. Explain the process of Angioplasty? Inflation of stenotic segment causes stretching of the vessel, fracture of the intimal plaque, partial disruption of the media and adven
The heart is enclosed in a membranous sac called the pericardium. It has two layers- the fibrous pericardium which is the outer layer and the serous pericardium that lies inside th
A person is declared to be dead upon the irreversible cessation of spontaneous body functions; brain activity, or blood circulation and respiration. However, only about 1% of a per
To study whether bacteria grow best where it is moist or dry Use 2 sterile dishes. Inoculate each one by touching a sterile transmit needle to a bacteria colony rowing in anoth
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