Which of the following is a function of a signal peptide?
A) to direct an mRNA molecule into the cisternal space of the ER
B) to bind RNA polymerase to DNA and initiate transcription
C) to terminate translation of the messenger RNA
D) to translocate polypeptides across the ER membrane
E) to signal the initiation of transcription

Question

Quizplus · Accepted Answer

A signal peptide's main function is to translocate polypeptides across the ER membrane, allowing for proper protein sorting and delivery within the cell.

Note: Choices A, B, C, and E describe functions of other molecules involved in gene expression, but not the signal peptide.

Which of the Following Is a Function of a Signal