Questions On Protein Synthesis Page 2

C h e m g u id e – q u e s t i o n s

b) Give the two possible anti-codons for the amino acid tyrosine (Tyr).

c) Give the anti-codon for the amino acid tryptophan (Trp).

d) Protein synthesis is controlled by a ribosome which comes in two parts – a smaller part and a

bigger part. The smaller part is involved in finding the start of the actual code for the protein on the

mRNA chain. How does it do that?

e) The bigger part of the ribosome then attaches as well as the tRNA carrying the methionine

molecule:

Describe what happens next to produce the beginnings of a protein chain containing the first three

amino acid residues. You should name the other two amino acids involved using the coding on the

mRNA chain in this diagram.

f) How does this process come to an end?

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