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Like DNA RNA is a long polymer having of nucleotides joined by 3'5' phosphodiester bonds. Furthermore, there are some differences:
? The bases in RNA are adenine abbreviated A, guanine G, uracil U and cytosine C. Thus thymine in DNA is replaced through uracil in RNA, a several pyrimidine shown in the figure. Furthermore, such as thymine, uracil can form base pairs with adenine.
? The sugar in the RNA is ribose rather than deoxyribose as in the DNA.
Equivalent ribonucleosides are guanosine, adenosine, cytidine and uridine. The corresponding ribonucleotides are adenosine 5'-triphosphate (ATP), guanosine 5'-triphosphate (GTP), cytidine 5'-triphosphate (CTP) and uridine 5'-triphosphate (UTP). As with DNA, the nucleotide series of RNA is also written as a base sequence in the 5' → 3' direction. Thus GUCAAGCCGGAC is the sequence of one short RNA molecule.
Figure: (a) Uracil, (b) ribose.
COMPOSITION OF CELL WALL Cell wall composed of cellulose, hemicellulose, pectin, lignin, cutin & chitin. Cell wall consists of 3 parts - 1. Matrix Highly cross-
Oceanic islands are interesting and somewhat specialised biomes. Islands which have broken away from the main continents have similarity of flora and fauna related to the continent
ENZYME INHIBITION Enzymes are often inhibited by the presence of suitable inhibitors. Much of current drug therapy is based on this. Basically, there are three major cla
respiration in animals?
introduction of safety measures of drug administration
Define the Concept of Nutrition? Nutrition may be defined as the science of food and its relationship to health. It is concerned primarily with the past played by nutrients in
Q. What is the chorioallantois membrane present in the embryonic development of birds and reptiles? How does this membrane participate in the energetic metabolism of the embryo?
what is ascus ?
Economic importance of obelia
What is Ionic bonds ? Ionic Bonds : Ionic bonds hold atoms together in crystals. They form when oppositely charged atoms, or ions, join (opposite charges attract) to equaliz
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