DNA and production of proteins

• Describe the shape of DNA


  double (stranded) helix
• what base does A (adenine) pair with?


  T (thymine)
• what base does G (guanine) pair with?


  C (Cytosine)
• how does base sequence decide the structure of a protein?


  directs the sequence of amino acids in the protein molecule
• define what a gene is


  A sequence of bases (genetic information) on DNA that codes for a protein
• what is the role of mRNA


  A molecule of mRNA carries the genetic message from a gene (DNA) to ribosomes that translate it into protein.
• what is the process of getting genetic code to complete protein


  Ribosomes attach to the mRNA (which carries genetic info) and the instructions it carries are used to assemble amino acids in the correct order to make a specific protein.