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Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
Rna bio
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  • 1. Nucleus Cytoplasm
  • 2. Nucleus Cytoplasm
  • 3. Nucleus DNA Cytoplasm
  • 4. T A C A G G A G T C A G A C T A T G T C C T C A G T C T G A
  • 5. RNA Polymerase T A C A G G A G T C A G A C T A T G T C C T C A G T C T G A Promoter Region
  • 6. G G A G T C A G A C T T C C T C A G T C T G A A T G A C A T RNA Polymerase
  • 7. A U C T G T C A G A C T T C A G T C T G A A T G T C C A G G A C A T RNA Polymerase
  • 8. A U C G A G C A G A C T A G T C T G A A T G T C C T C T G A G G A C A T RNA Polymerase
  • 9. A U C G A G A G A C T C T G A A T G T C C T C A G T G A C T G A G G A C A T RNA Polymerase
  • 10. A U C G A G A G U C T G A A T G T C C T C A G T C T C A G A C T G A G G A C A T RNA Polymerase
  • 11. A U C G A G A G U CA G T C A G A C T G A G G A C A T RNA Polymerase A G T C T G A C T C C T G T A
  • 12. Nuclear Pore Nucleus Cytoplasm mRNA
  • 13. Amino Acids Small Subunit rRNA tRNA Large Subunit Anti-codon A G T C T G A C T G Codon C C T C A A T T Start codon Stop codon
  • 14. Peptide Bond A A G T C T G G C G T C C T A G T A
  • 15. A C T G T T G T C A G A C C T G T A
  • 16. A G G A G T C T C A C T C C T G T A
  • 17. A G T C T G A C T C C T G T A
  • 18. A G T C T G A C T C C T G T A
  • 19. Cytoplasm
  • 20. Summary • The first part of protein synthesis is transcription. It starts when mRNA strands are transcribed in the nucleus. The strands are created from a DNA template strand with the help of RNA polymerase. This mRNA strand leaves the nucleus through the nuclear pores. The second part of protein synthesis is translation, which occurs in the cytoplasm and needs ribosomes. A small ribosome subunit attaches to the bottom of the mRNA strand, and a large ribosome subunit attaches to the top of the mRNA. Then the synthesis can begin, the ribosome "reads" the mRNA and tRNA brings the right amino acid. Then the anticodon matches with a codon. Then another anticodon comes along and then the next so on and so forth. Then before the tRNA leaves the ribosome polymerase creates a peptide bond between the amino acids. Then the tRNA leaves the ribosome, leaving the amino acid behind. This process repeats itself until it reaches a stop codon. Then the amino acid chain called a polypeptide, is released into the cytoplasm as a protein.

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