Double-stranded RNA molecule. Computer model of the structure of double-stranded RNA (ribonucleic acid). The majority of RNA in a cell is in the single-stranded form, but some double-stranded molecules do exist and take on the same double helical form as DNA (deoxyribonucleic acid). Each strand consists of a sugar-phosphate backbone (on outside of helix) attached to nucleotide bases (between strands). There are four different bases; guanine, cytosine, adenine and uracil. RNA is the intermediate between DNA, the genetic material, and its product, proteins. It also forms part of ribosomes, the location of protein synthesis.
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TOP03210333
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達志影像
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