explain the structure function and types of rna short note
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Ribonucleic acid (RNA) is an important nucleic acid of the cell.
RNA is made up of ribose sugar, phosphate molecules and four types of nitrogenous bases adenine, guanine, cytosine and uracil.
The nucleotide i.e., smallest unit of the chain of the RNA molecule is formed by the combination of a ribose sugar, phosphate molecule and one of the nitrogen bases..
Large numbers of nucleotides are bonded together to form the macromolecule of RNA.
RNA performs the function of protein synthesis.
According to function, there are three types of RNA:
(a) Ribosomal RNA (rRNA): It is the component of cellular organelle ribosome. Ribosomes perform the function of protein synthesis.
(b) Messenger RNA (mRNA): It carries the information for protein synthesis from genes (i.e. DNA segment in the cell nucleus) to ribosomes (in the cytoplasm) which produce the proteins.
(c) Transfer RNA (tRNA): It carries the amino acid up to the ribosomes as per the message of the mRNA.
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