Proteins are sorted to mitochondria, chloroplasts, and the nucleus after they have been made on _________. This sorting mechanism is called ___________.
A) ribosomes bound to the endoplasmic reticulum; posttranslational import
B) ribosomes bound to the endoplasmic reticulum; cotranslational import
C) ribosomes bound to the Golgi complex; posttranslational import
D) free ribosomes in the cytosol; posttranslational import
E) free ribosomes in the cytosol; cotranslational import

Question

Proteins are sorted to mitochondria, chloroplasts, and the nucleus after they have been made on _________.  This sorting mechanism is called ___________.
A) ribosomes bound to the endoplasmic reticulum; posttranslational import
B) ribosomes bound to the endoplasmic reticulum; cotranslational import
C) ribosomes bound to the Golgi complex; posttranslational import
D) free ribosomes in the cytosol; posttranslational import
E) free ribosomes in the cytosol; cotranslational import

Quizplus · Accepted Answer

Proteins destined for mitochondria, chloroplasts, and the nucleus are typically synthesized by free ribosomes in the cytosol and then sorted to their destinations after synthesis, a process known as posttranslational import.

Proteins Are Sorted to Mitochondria, Chloroplasts, and the Nucleus After