Before the mRNA transcribed from a gene can be used to translate into a protein,it must be
A)edited to remove introns.
B)edited to remove exons.
C)transported into the cytoplasm.
D)edited to remove introns and transported into the cytoplasm.
E)edited to remove exons and transported into the cytoplasm.

Question

Quizplus · Accepted Answer

mRNA transcribed from a gene contains both introns and exons. Before it can be used to translate into a protein, the introns must be spliced out, leaving only the exons. This process occurs in the nucleus and is facilitated by spliceosomes. After splicing, the edited mRNA is transported out of the nucleus and into the cytoplasm, where it can be used to direct protein synthesis. Therefore, the correct answer is D, which states that the mRNA must be edited to remove introns and transported into the cytoplasm.

Before the MRNA Transcribed from a Gene Can Be Used