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In a polyribosome complex the ribosome present toward 5' end of mRNA has
Longest polypeptide chain
Smallest polypeptide chain
All the polypeptide chains of equal sizes
A chain without met
Answers (1)
The ribosome located at the 5' end of the mRNA does not necessarily produce the longest or shortest polypeptide chain. Since all the ribosomes in a polyribosome complex are translating the same mRNA molecule, they typically produce polypeptide chains of similar lengths. The size of the polypeptide chains is determined by the sequence of codons on the mRNA and the corresponding amino acids they code for, rather than the position of the ribosome along the mRNA molecule. Additionally, the presence or absence of a specific amino acid such as methionine (Met) in the polypeptide chain would depend on the coding sequence of the mRNA and the start codons encountered by the ribosomes during translation.Hence, the correct answer is option 3.
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