Q.What are different types of RNA which are found in cell

RNA is chemically similar to DNA but far more abundant in the cell (up to 8× more RNA than DNA), located mainly in the cytoplasm (ribosomes) and, in smaller amount, the nucleolus. RNA comes in three functional types: rRNA (in ribosomes, which are ~60% RNA/40% protein -- the actual site of protein synthesis), tRNA (the smallest nucleic acid, 73-94 nucleotides, carrying amino acids to the ribosome), and mRNA (short-lived, single-stranded, synthesised from a DNA template -- transcription -- and decoded at the ribosome -- translation -- to build protein). This DNA→RNA→protein flow is the central dogma of molecular genetics. …