![]() RNA is very similar to DNA, but differs in a few important structural details: RNA is usually single stranded, while DNA is usually double stranded. One type of RNA acts as a messenger between DNA and the protein synthesis complexes known as ribosomes, others form vital portions of the structure of ribosomes, act as essential carrier molecules for amino acids to be used in protein synthesis, or change which genes are active. RNA plays several important roles in the processes of translating genetic information from deoxyribonucleic acid ( DNA) into proteins. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. Ribonucleic acid or RNA is a nucleic acid, consisting of many nucleotides that form a polymer. Notice the single strand and its nitrogen-rich (blue) bases and oxygen-rich (red) backbone.
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