RNA is a polynucleotide macromolecule in the form of a single or multiple chains that is not twisted like DNA. RNA is found in many ribosomes or cytoplasm and its existence is not fixed because it is easily broken down and must be reshaped. In the meantime, you may also need the best biologia molecular equipment for your lab.
RNA is a polynucleotide composed of many ribonucleotides. Each ribonucleotide is lost from:
Ribose pentose sugar.
The phosphate group, which forms a ribose backbone together with RNA.
Nitrogen base, which consists of purine bases and pyrimidine bases.
RNA plays a role in the process of protein synthesis in cells. However, in some viruses, RNA acts like DNA to carry genetic information.
Kinds of RNA
Genetic RNA, which is RNA that acts like DNA in carrying genetic information. This type of RNA only exists in several types of viruses.
Nongenetic RNA, which is RNA which only plays a role in the process of protein synthesis. This type of RNA is present in organisms that have DNA. There are three types of nongenetic RNA, namely:
RNA ambassador (mRNA), a long single chain composed of hundreds of nucleotides. This RNA is formed through the process of transcription in the cell nucleus by DNA. The function of mRNA is as a carrier of the genetic code (codon) from the cell nucleus to the cytoplasm.
Transfer RNA (tRNA), a short single chain formed by DNA inside the cell nucleus then transported to the cytoplasm. The function of tRNA is to translate codons from mRNA and transport amino acids from the cytoplasm to ribosomes.
Ribosomal RNA (rRNA), a single, branched and flexible chain of ribosomes formed by DNA in the cell nucleus. The amount is more than mRNA or tRNA. The function of rRNA is as a polypeptide assembly machine in protein synthesis.
From this discussion, besides knowing what DNA and RNA are, we also know the differences between them. For example, the structure of DNA in the form of a long double chain opposite RNA in the form of a single short chain. Then, the amount of DNA that remains in contrast to RNA is not fixed. The existence of permanent DNA is also different from RNA which is not permanent because it is easily decomposed.