Rna And Protein Synthesis Ss

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Slidecast of the RNA, transcription and translation Lecture given be CCHS Biology

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Rna And Protein Synthesis Ss

  1. 1. RNA and Protein Synthesis
  2. 2. DNA Quiz <ul><li>The macromolecule DNA is made of monomers called _____________. </li></ul><ul><li>DNA has a _________ __________ structure that looks like a spiral staircase. </li></ul><ul><li>The sugar in DNA is ___________. </li></ul><ul><li>Adenine always binds with _________ and Cytosine always binds with _________ in DNA. </li></ul><ul><li>DNA carries _____________ in the cells __________. </li></ul>
  3. 3. RNA <ul><li>Ribonucleic Acid </li></ul><ul><li>Contains Ribose </li></ul><ul><li>Single Stranded </li></ul><ul><li>Adenine binds with Uracil not Thymine </li></ul>
  4. 4. Types of RNA <ul><li>mRNA - messenger, carries info from nucleus to ribosome </li></ul><ul><li>tRNA- Transfer, carries amino acids to ribosome </li></ul><ul><li>rRNA- ribosomal, helps form the ribosome and catalyzes protein synthesis </li></ul>
  5. 5. RNA Transcription <ul><li>Transcription is the process of transferring information from DNA to RNA </li></ul><ul><li>RNA polymerases build complementary RNA strands. </li></ul>
  6. 6. RNA Transcription <ul><li>To copy in the same words but in a different form </li></ul><ul><li>EXAMPLE </li></ul><ul><ul><li>MAKE A PROTEIN FOR ENERGY PRODUCTION </li></ul></ul><ul><ul><li>MAKE A PROTEIN FOR ENERGY PRODUCTION </li></ul></ul>
  7. 7. Steps of Transcription <ul><li>Helicases unwind DNA </li></ul><ul><li>RNA Polymerase binds to promoter </li></ul><ul><li>RNA Polymerase transcribes a mRNA </li></ul><ul><li>RNA Polymerase falls off </li></ul><ul><li>mRNA is spliced </li></ul><ul><li>mRNA sent to ribosome </li></ul>
  8. 8. mRNA Splicing <ul><li>Introns- regions of unused DNA </li></ul><ul><li>Exons- regions of DNA used to make protiens </li></ul><ul><li>Introns are removed before the mRNA is sent out of the nucleus </li></ul><ul><li>EXons are the EXpressed portions of DNA </li></ul>
  9. 9. Protein Synthesis <ul><li>All Protein synthesis takes place on a ribosome </li></ul><ul><li>Protein synthesis is called translation </li></ul><ul><li>mRNA information is translated into a protein </li></ul>
  10. 10. Translation <ul><li>To copy in the same words but in a different language </li></ul><ul><li>EXAMPLE </li></ul><ul><ul><li>MAKE A PROTEIN FOR ENERGY PRODUCTION </li></ul></ul><ul><ul><li>Bilden Sie ein Protein für Energie produktion </li></ul></ul>
  11. 11. Translation <ul><li>mRNA’s match up with tRNA’s anticodons </li></ul><ul><li>Amino acids attach to each other at ribosome. </li></ul>
  12. 12. Video URLs <ul><li>Transcription- http://vcell.ndsu.nodak.edu/animations/transcription/movie.htm </li></ul><ul><li>Alternative splicing- http://vcell.ndsu.nodak.edu/animations/mrnasplicing/movie.htm </li></ul><ul><li>Translation- http://vcell.ndsu.nodak.edu/animations/translation/movie.htm </li></ul>

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