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  1. RNA | Definition, Structure, Types, & Functions | Britannica

    Dec 10, 2025 · RNA, complex compound of high molecular weight that functions in cellular protein synthesis and replaces DNA as a carrier of genetic codes in some viruses. RNA consists of ribose …

  2. RNA - Wikipedia

    Ribonucleic acid (RNA) is a polymeric molecule that is essential for most biological functions, either by performing the function itself (non-coding RNA) or by forming a template for the production of …

  3. What Is RNA? What Does RNA Do? - Science ABC

    Jun 2, 2024 · Structurally, RNA is the single-stranded cousin of DNA. Three main types of RNA: mRNA, rRNA and tRNA are involved in making proteins. Proteins are the building blocks of life and help to …

  4. Stages of transcription: initiation, elongation & termination (article ...

    Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule. RNA polymerase is the main transcription enzyme. Transcription begins when RNA …

  5. RNA: What it is, what it does, and why it’s one of life’s most ...

    Dec 21, 2022 · Although the hypothesis may not be correct, it does explain the molecule's versatility: RNA has the ability to not only carry genes but, like proteins and unlike DNA, the chemistry of its …

  6. Ribonucleic Acid (RNA) Fact Sheet

    May 24, 2024 · RNA molecules are made by a process called transcription. In RNA, there are four different nucleotides, abbreviated by the first letters of their chemical names: A, U, C, and G. Each of …

  7. DNA and RNA: Structure, Function, and Synthesis Explained

    Once bound, RNA polymerase unwinds a small portion of the DNA helix, exposing the template strand for RNA synthesis. As transcription progresses, RNA polymerase moves along the DNA, …

  8. What are mRNA vaccines and how do they work? - MedlinePlus

    Most vaccines contain a weakened or dead bacteria or virus. However, scientists have developed a new type of vaccine that uses a molecule called messenger RNA (mRNA) rather than part of an actual …

  9. Ribosomal RNA (rRNA) | Definition & Function | Britannica

    Ribosomal RNA is a molecule in cells that forms part of the protein-synthesizing organelle known as a ribosome and that is exported to the cytoplasm to help translate the information in messenger RNA …

  10. Biochemistry, RNA Structure - StatPearls - NCBI Bookshelf

    Jul 29, 2023 · Transcription is the process of RNA formation from DNA, and translation is the process of protein synthesis from RNA. The means of RNA synthesis and the way that it functions differs …