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DNA Replication and Protein Synthesis

DNA Replication and Protein Synthesis. Translation Code Section 3. Biology Fall 2012. Bell Ringer. Write a word map that describes transcription: Write a word map that describes translation:. Objectives. Compare the structure of RNA with that of DNA

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DNA Replication and Protein Synthesis

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  1. DNA Replication and Protein Synthesis Translation CodeSection 3 Biology Fall 2012

  2. Bell Ringer • Write a word map that describes transcription: • Write a word map that describes translation:

  3. Objectives • Compare the structure of RNA with that of DNA • Summarize the process of transcription • Relate the role of codons to the sequence of amino acids that results after translation • Outline the major steps of translation • Discuss the evolutionary significance of the genetic code

  4. Transcription Review http://www.youtube.com/watch?v=ztPkv7wc3yU

  5. Translation http://www.youtube.com/watch?v=5bLEDd-PSTQ

  6. The Genetic Code: 3 Nucleotide “Words” • ___________________ RNA (mRNA) is made when a cell needs a particular _____________ • mRNA: form of RNA that carries the _______________ for making a protein from a gene and delivers it to the site of ___________________

  7. The Genetic Code: 3 Nucleotide “Words” • ______________________: information translated from the language of __________ (nucleotides) to the language of _______________________ (amino acids) • ___________: RNA instructions are written as a series of 3-nucleotide sequences on the _____________

  8. The Genetic Code: 3 Nucleotide “Words” • Each ___________ along mRNA strand corresponds to an __________________ or signifies a start or stop signal for translation

  9. The Genetic Code: 3 Nucleotide “Words” • __________________: the ______________ and __________ and __________ signals that are coded for by each of the possible 64 ___________ codons

  10. Interpreting Genetic Code • Find the first base of the mRNA codon along the left side of the table • Follow that row to the right until you are beneath the second base of the codon • Move up or down in that section until you are even, on the right side of the chart, with the third base of the codon

  11. Translation • Translate this mRNA sequence into amino acids:

  12. RNA’s role in Translation • Translation takes place in the _____________ • ______________________ (tRNA): single strands of RNA that temporarly carry a specific ______________________ on one end • Each has an _____________________: a three nucleotide sequence on a tRNA that is complementary to an mRNA codon

  13. Example • Transfer this mRNA sequence into its tRNA anticodon and its amino acid • tRNA anticodons: • __________________ • __________________ • __________________ • __________________  Amino acids

  14. RNA’s role in Translation • ___________________: composed of both proteins and ribosomal RNA • Each ribosome temporarily holds one _________ and two __________ molecules • _______: RNA molecules that are part of the structure of ribosomes

  15. Review • Genetic code review: • http://www.youtube.com/watch?v=XwTExa8rs5A • Lets watch a video of transcription and translation for review! • http://www.youtube.com/watch?v=bpMhgAGybe4&feature=related

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