The Genetic Code

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  • Created by: sjones1
  • Created on: 01-04-16 11:01

1. what is meant by the term 'stop codon'?

  • a codon that doesnt stop working
  • a codon that does not code for an amino acid, but instead indicates the end of a polypeptide chain
  • a codon that stops all metabolic functions within a cell
  • a codon that stops the production of ATP within a cell
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2. what is meant by the code is almost universal?

  • the same sequences of bases, code for the same amino acids in all organisms
  • the genetic code exists all over the world
  • every organism has the same proteins
  • all DNA is the same

3. Give an example of a structural protein that DNA codes for:

  • Carbohydrates
  • Collagen and Keratin
  • Fibre and Hooves
  • Haemoglobin and Cellulose

4. What is meant by the term gene?

  • A sequence of DNA nucleotides that code for a polypeptide
  • a section of DNA
  • a section of DNA that codes for lipids
  • a short strand of DNA

5. What is meant by the code is degenerate?

  • all amino acids have at least 5 different codons
  • only one codon can code for one amino acid
  • a given amino acid maybe coded for by more than one codon
  • 1 amino acid can only be coded for by one specific codon


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