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Unformatted text preview: (1) Pentose sugar (2) Phosphate group (3) One of four nitrogen bases attached to the pentose sugar. A nucleotide without a phosphate group is a nucleoside. (B) Nucleic acids They are complex, large biomolecules formed of many units called nucleotides. Nucleic acids are of two types : (1) DNA- Deoxyribonucleic acid and, (2) RNA- Ribonucleic acid The DNA of cells contains genetic information in a coded form, and is only present in the nucleus of the cellis formed from DNA, plus a few special organelles. RNA and is present in the cytoplasm and in the nucleus of the cell. DNA and RNA differ from one another in their components. DNA contains the pentose sugar, deoxyribose, while RNA contains ribose. There are also small differences in the types of nitrogen bases found in DNA and RNA....
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- Fall '10