RNA and Types of RNA, Structure of RNA (L-4) | Molecular Basis of Inheritance | Biology Class 12 ...

RNA and Types of RNA, Structure of RNA (L-4) | Molecular Basis of Inheritance | Biology Class 12 Chapter 6 Explain the structure and function of RNA, Functions of RNA, Structure of RNA, Structure of RNA, Structure and Types of DNA and RNA, What is the function of DNA, Functions of Chromosomes, What is the function of RNA, Main function of RNA, Functions of RNA, Functions of Nucleic Acids, Functions of RNA, Two Important Functions of Nucleic Acids, Describe the functions of RNA., Functions of Nucleic Acids (RIBONUCLEIC ACID: RNA) Ribonucleic Acid: RNA Occurrence RNA is synthesized in the nucleus. Only some RNA is contained within ribosomes, but most RNA exists freely in the cytoplasm. The amount of DNA in a cell is constant, but the amount of RNA is not constant because thousands of copies of RNA molecules are being made all the time. RNA molecules participate in the synthesis of polypeptide chains in the cytoplasm. Composition of Ribonucleic Acid (Composition of Ribonucleic Acid) Like DNA, RNA molecules are polymers made of four types of nucleotide monomers. The number of nucleotides in RNA molecules ranges from 70 to 12,000. There are three types of RNA. For protein synthesis, cells transcribe the following three types of ribonucleic acids (RNA): 1. Messenger RNA (mRNA) 2. Transfer RNA (tRNA) 3. Ribosomal RNA (iRNA) Messenger RNA (mRNA) These are all explained in detail.