Question

Study the mRNA Segment given above which is complete to be translated into a polypeptide chain.
  1. Write the codons ‘a’ and ‘b.'
  2. What do they code for?
  3. How is peptide bond formed between two amino acids in the ribosome?

Answer

  1.  
a - AUG.

b - UAA/UAG/UGA.
  1.  
AUG code for Methionine.

UAA/UAG/UGA - Stop codon/Nonsense codon/Does not code for any amino acid.
  1.  
Charged tRNA are brought closer together on mRNA in the ribosomes, and Ribosomes acts as a catalyst (ribozyme) forming peptide bond.

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