Within a cell, the amount of protein made using a given mRNA molecule depends partly on
A) the degree of DNA methylation.
B) the rate at which the mRNA is degraded.
C) the number of introns present in the mRNA.
D) the types of ribosomes present in the cytoplasm.

Question

Quizplus · Accepted Answer

The rate at which mRNA is degraded plays a role in determining the amount of protein made using a given mRNA molecule. If the mRNA molecule is degraded quickly, less protein will be produced from it.

Answer: D 
 The types of ribosomes present in the cytoplasm can affect the translation of mRNA into protein. For example, presence or absence of certain regulatory factors on ribosomes can alter translation rates of specific mRNAs.

Option A and C are incorrect as DNA methylation and intron/exon structure do not directly affect the translation of mRNA into protein.

Within a Cell, the Amount of Protein Made Using a Given