Assuming that the average amino acid residue contributes 110 to the peptide molecular weight, what will be the minimum length of the mRNA encoding a protein of molecular weight 50,000?

Question

Quizplus · Accepted Answer

The molecular weight of the protein can be calculated by multiplying the number of amino acid residues with 110. 
So, 50,000/110=454.54 (approx. 455)
Therefore, the minimum number of nucleotides required in the mRNA would be thrice the number of amino acids (since each amino acid is encoded by a codon consisting of three nucleotides).
So, 455 x 3 = 1365 nucleotides (minimum length).
Option C (1,400 nucleotides) is the closest answer.

Assuming That the Average Amino Acid Residue Contributes 110 to the Peptide