Protein transport into the nucleus occurs by
A) diffusion through the nuclear envelope membranes.
B) passive diffusion through nuclear pore complexes.
C) selective transport through nuclear pore complexes.
D) selective transport through individual subsets of nuclear pore complexes that are specific for individual classes of proteins.

Question

Quizplus · Accepted Answer

Protein transport into the nucleus is a selective process that occurs through nuclear pore complexes. These complexes are lined with proteins called nucleoporins that selectively allow certain molecules to pass through based on their size and chemical characteristics. Thus, protein transport into the nucleus occurs through selective transport through nuclear pore complexes.

Protein Transport into the Nucleus Occurs by