Protein Synthesis

  • Transcription

    An enzyme attaches to the DNA molecule at the gene of interest.
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    Transcription

  • Transcription

    The two strands of DNA separate at that location.
  • Transcription

    Complementary RNA nucleotides bond to the nitrogenous bases on one of the separated DNA strands.
  • Transcription

    The chain of RNA nucleotides forms a single-stranded molecule of RNA by using the DNA strand as a template.
  • Transcription

    When a stop codon is reached, the RNA strand separates from the DNA molecule, leaves the nucleus and goes through the nuclear membrane into the cytoplasm.
  • Transcription

    The two DNA strands rejoin.
  • Translation

    The mRNA attaches to a ribosome, which contains proteins and ribosomal RNA (rRNA). The function of ribosomes is to assemble proteins according to the genetic message.
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    Translation

  • Translation

    Another type of RNA, transfer RNA (tRNA), brings amino acids to the ribosome in the order specified by the codon sequence on the mRNA. At one end of each tRNA is the anticodon, a region that consists of three nucleotide bases that are complementary to the codon of mRNA.