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 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 doesnt stop working
  • 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. What is mean by the code is non-overlapping?

  • each codon is only present in one protein
  • each codon codes for one amino acid
  • each amino acid is specific to one particular codon
  • only 1 amino acid can be coded for by 1 codon

4. What is meant by the term Reference Strand?

  • A template for translation
  • A strand of DNA that mRNA uses as a template in transcription
  • An enzyme used to catalyse mRNA production
  • A strand that people refer to when wanting to know which bases code for what protein

5. What is meant by the code is degenerate?

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

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