Which of the following statements about the mRNAs in a typical eukaryotic cell is NOT correct?
A) mRNA abundance is one factor that determines cellular protein levels.
B) Only a relatively small number of mRNA species is present at very high abundance.
C) Most of the mRNA complexity of a cell is in the high abundance mRNA class.
D) Cellular mRNA concentrations are regulated by transcriptional controls.

Question

Quizplus · Accepted Answer

The statement "Most of the mRNA complexity of a cell is in the high abundance mRNA class" is not correct. In fact, the opposite is true - most of the diversity in mRNA species is found in the low abundance class, which includes rare transcripts and splice variants. This is supported by studies using RNA sequencing, which have revealed that a large number of low-abundance mRNAs are expressed in cells.

Which of the Following Statements About the MRNAs in a Typical