1 / 10

RNA

RNA. Chapter 10.2. Structure of RNA. Ribose - the sugar molecule of every RNA nucleotide Uracil - nitrogen-containing pyrimidine base (replaces thymine) Uracil pairs with adenine in RNA. Types of RNA. Messenger RNA (mRNA) - consists of RNA nucleotides in the form of a single uncoiled chain

bernard-bray
Download Presentation

RNA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. RNA Chapter 10.2

  2. Structure of RNA • Ribose- the sugar molecule of every RNA nucleotide • Uracil- nitrogen-containing pyrimidine base (replaces thymine) • Uracil pairs with adenine in RNA

  3. Types of RNA • Messenger RNA (mRNA)- consists of RNA nucleotides in the form of a single uncoiled chain • Carries genetic information from DNA in the nucleus to the cytosol

  4. Transfer RNA (tRNA)- consists of a single chain of about 80 RNA nucleotides in a hairpin shape • Binds to specific amino acids • 45 varieties

  5. Ribosomal RNA (rRNA)- most abundant form of RNA • Consists of globular RNA nucleotides • Makes up the ribosomes where proteins are made

  6. Transcription • Transcription- the process by which genetic information is copied from DNA to RNA • RNA polymerase binds to the promoter of a specific gene • A complimentary copy of the DNA base sequence is made

  7. Steps of Transcription • RNA polymerase- the primary transcription enzyme • Synthesizes RNA copies of specific sequences of DNA

  8. Promoters- specific regions of DNA where RNA polymerase binds to Marks the beginning of a single gene When RNA polymerase binds to DNA, the DNA separates and one side acts as a template

  9. Termination signal- a specific sequence of nucleotides that marks the end of a gene • At a termination signal, RNA polymerase releases the DNA and the newly formed RNA molecule

  10. Products of Transcription • Transcripts- the different types of RNA molecules • Instructions for making a protein are copied from DNA to mRNA

More Related