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RNA

RNA. Structure, Transcription and Editing. What is Protein Synthesis?. The transcription and translation of specific parts of DNA to form proteins . *Goal is to make proteins* What are Proteins made up of? Amino acids!. Structure of RNA. R ibo N ucleic A cid Single Stranded

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RNA

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  1. RNA Structure, Transcription and Editing

  2. What is Protein Synthesis? • The transcription and translation of specific parts of DNA to form proteins. *Goal is to make proteins* What are Proteins made up of? • Amino acids!

  3. Structure of RNA • RiboNucleicAcid • Single Stranded • The base in DNA, Thymine, is replaced with Uracil

  4. Four RNA Bases Adenine Uracil Guanine Cytosine

  5. Types of RNA • Messanger RNA: carries instructions for assembling amino acids • Transfer RNA: Transfers amino acids to ribosome as its being coded • Ribosomal RNA: Component of ribosome. Enzyme site of all protein synthesis

  6. Transcription • Enzyme RNA polymerase binds to DNA • Separates the strands • then uses 1 strand as a template to assemble RNA GOAL: Contains a code for making protein

  7. Where does Transcription Occur • Nucleus! What is a Codon? • 3 nucleotides that specify a certain amino acid

  8. Codonsin RNA

  9. http://www.youtube.com/watch?v=ztPkv7wc3yU Transcription • http://www.youtube.com/watch?v=1fiJupfbSpg

  10. Translation • The actual decoding of the mRNA message • Uses information from mRNA to form proteins • Takes place on Ribosomes

  11. Mutations • Point: One base is substituted for another • Frameshift: adding a base causing the reading frame (of 3) to shift • Chromosomal: Changes in number or structure of chromosomes

  12. mutations http://www.youtube.com/watch?v=efstlgoynlk

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