NUCLEIC ACIDS Nucleic vinegarishs ar involved in the storage and transfer of transmissible information in entirely living organisms, including the simplest viruses. There atomic number 18 2 types of nucleic acid in cells, Deoxyribonucleic acid ( deoxyribonucleic acid) and Ribonucleic acid (ribonucleic acid). Nucleic acids ar so named because deoxyribonucleic acid was 1st obscure from nuclei, but both desoxyribonucleic acid and ribonucleic acid also put across in former(a) parts of the cell, e.g. DNA is also appoint in mitochondria and chloroplasts, whilst ribonucleic acid is also shew in the cytoplasm, particularly at the ribosomes. both DNA and RNA atomic number 18 polymers, the monomeric units being called nucleotides. DNA and RNA are because polynucleotides. There are atomic number 23 divers(prenominal) nitrogen-containing organic bases present in nucleic acids: adenine (A), guanine (G), one C (C), deoxythymidine monophosphate (T) and uranium (U). A, T, C and G are arrange in DNA. A, U, C and G are found in RNA (uracil replaces thymine here). The nitrogenous bases belong to devil polar chemical families. angstrom unit and guanine are purine bases and turn out a double-ringed complex proboscis part. Cytosine, thymine and uracil are pyrimidine bases and have a single-ringed construction The gang of a sugar and a base forms a menstruate called a nucleoside. The addition of a phosphate group to this structure forms the nucleotide. Different nucleotides are make according to the sugar and bases used. Cells continuously produce nucleotides and these form a pool from which nucleotides can be used up as required for manufacturing DNA, RNA or a variety of opposite substances.
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