Question

Why is it important for all tRNAs to have similar structures?

Short answer

It is important for all tRNAs to have similar structures because all the tRNAs with their attached amino acids need to interact withthe same ribosome during protein synthesis.

Step-by-step solution

Translation

Translation or protein synthesis occurs within the ribosome where the smaller sub-unit attaches itself with the mRNA having the specific sequence of nucleotides that will be translated to form a polypeptide chain. On the other hand, the larger subunit of the ribosome is the site where the polypeptide chain is formed through a peptide bond between the amino acids.

tRNA interaction with the ribosome

tRNAs are the carriers required to bring in amino acids to form the polypeptide chain. While bringing in the amino acids, all the tRNA interact with one single ribosome, which is involved in reading an mRNA and forming the polypeptide chain accordingly.

Therefore, it is necessary for all the tRNAs to have a similar structure, as the different structures would not allow all the tRNA to interact with the same ribosome.