what is rna a level?
RNA (Ribonucleic Acid) is a polynucleotide, similar to DNA, one of whose roles is protein synthesis. RNA is structurally different from DNA, in that. It is usually single stranded. It contains the Nitrogenous Base Uracil instead of Thymine. Its Nucleotides contain Ribose sugar, as opposed to Deoxyribose sugar.