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(a) Write the steps that lead to aminoacylation of tRNA in the cell.

(b) Explain the events that occur in ribosomes during translation in prokaryotes.

 

 
 
 
 
 

Answers (1)

a) Amino acids are stimulated in the presence of ATP and linked to their related tRNA.

b) The ribosome binds to the mRNA at the staff codon (AUG) that is recognised only by the initiator tRNA, and the ribosome moves towards the elongation phase of protein synthesis. During this stage complexes composed of an amino acid linked to tRNA sequentially bind to the relevant codon in mRNA by forming complementary base pairs with the tRNA anticodon. The ribosome moves from codon to codon along the mRNA, amino acids are added one by one and translated into Polypeptide sequences represented by mRNA, at the end-A it releases factor that binds to the stop codon terminating translation and releasing the complete polypeptide from the ribosome.

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