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The structure of RNA is a single-stranded molecule made up of basic units called nucleotides that contain a nitrogenous base, a five-carbon sugar and a phosphate group. Although there is only one strand of RNA, as opposed to the two stranded double helix of DNA, it does...


RNA, or ribonucleic acid, is a family of biological molecules that function in gene synthesis, regulation and expression. Along with DNA, RNA plays an active role in transcribing and translating genes and proteins that make up the human body.


Ribonucleic acid, known as RNA, is composed of a combination of four different nucleotides: adenine, uracil, guanine and cytosine. Each nucleotide primarily consists of a ribose sugar (five-carbon ring) and a phosphate group.


The essential components of a nucleotide are a pentose (five carbon sugar), a nitrogenous base and one to three phosphate groups. The combinations of possible pentoses, bases and phosphate groups create several different nucleotides.


There are three main types of RNA. They are messenger RNA (mRNA), ribosomal RNA (rRNA) and transfer RNA (tRNA). These three types of molecules perform different functions in gene coding and regulation.


The three types of ribonucleic acid are messenger RNA, ribosomal RNA and transfer RNA. The common abbreviations for the names are mRNA, rRNA and tRNA. Messenger RNA moves from the nucleus to the cytoplasm of the cell, while ribosomal RNA and transfer RNA reside only in ...


RNA is important to cells because it relays information encoded in DNA to tiny organs within the cell, called ribosomes, which produce protein according to the RNA's instructions. RNA is thus vital to the basic functioning of the cell.