protein synthesis

• what is the process of transcription?

  -the DNA unzips/uncoils, so we have 2 strands of DNA.

  -the RNA polymerase binds to the DNA before where the gene starts.

  -2 strands of DNA separate apart, so the bases are exposed.

  -RNA polymerase will move along the DNA strand and read the bases one by one, to make an mRNA strand.

  -RNA polymerase detaches from the DNA, once its read the bases, and forms a strand of mRNA, which is free to leave the nucleus and head to the ribosomes.
• what is the process of transcription?

  -the ribosome and the mRNA binds.

  -the ribosome adds 1 amino acid at a time and this is brought to the ribosome by the molecule of tRNA

  -the 'transfer-RNA' has a structure of an amino acid and anticodons, which has a sequence of 3 bases complimentary to the 3 bases on mRNA.

  -the bases will attract this tRNA molecule.

  -The ribosomes will move along the chain, until it reaches the end and detaches and the chain of amino acids fold to build a protein.