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Most RNA molecules are single-stranded but an RNA molecule should hold regions that can form complementary base pairing where the RNA strand loops back on itself in the above figure. If so, the RNA will have few double-stranded regions. The Ribosomal RNAs (rRNAs) and transmit RNAs (tRNAs) exhibit substantial secondary structure, as do some messenger RNAs (mRNAs).
figure: An example of self-complementarity in RNA, forming an internal double-stranded region; hydrogen bonding between bases is shown by the symbol •.
Explain the Transport of Amino Acids? More than one transport or carrier system functions in the absorption of amino acids. The active carrier system for neutral amino acids sh
GONADS - They develop from the mesoderm of the embryo. The gonads are the sex glands; the ovaries and the testes. They produce ova and sperms respectively i.e. cytogenic in
Why do ecological models commonly have limited applications? The applications of ecological models are limited due to the models are normally very simple and do not accurately
THYMU S GLAND Flat, bilobed gland located in the mediastinal space in front of heart. Well developed in new born child and grows upto puberty but starts degenerating the
Q. Where in eukaryotic cells does mRNA synthesis take place? To where do these molecules migrate? Messenger RNA molecules are synthesized within the nucleus, pass through gain
H y po c a l c a e m i a It is also known as milk fever or parturient paresis. The disease occurs due to imbalance in input and output of calcium and is characterize
Leukotrienes and prostaglandins are produced only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane. The effects formed b
Define Trace elements for school children and adolescents? Iodine requirements peak in adolescence. Consumption of iodized salt should be ensured. Adequacy of zinc for growth i
Protozoans - Body Form The protozoan body is usually bound only by the cell membrane called plasmalemma. In some protozoans such as in ciliates the rigidity and the flexibili
(a) Anti-malarial drugs kill the parasites in the blood but they do not cure the disease.Why is this? (b) Why was the use of DDT insecticide not successful in eradicating mal
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