What means RNA and it shape in the biology

The Answer is ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.

RNA is typically single stranded and is made of ribonucleotides that are linked by phosphodiester bonds.

I hope this helps you:)

RNA means

RNA, abbreviation of ribonucleic acid, complex compound of high molecular weight that functions in cellular protein synthesis and replaces DNA (deoxyribonucleic acid) as a carrier of genetic codes in some viruses

RNA shape

RNA is typically single stranded and is made of ribonucleotides that are linked by phosphodiester bonds. 1. RNA contains the pyrimidine uracil in place of thymine found in DNA. Figure 2. DNA is typically double stranded, whereas RNA is typically single stranded.