You are studying how the protein transferrin enters cells. When you examine cells that have taken up transferrin, you find it inside clathrin-coated vesicles. Therefore, the most likely mechanism for uptake of transferrin is

Question

Quizplus · Accepted Answer

The presence of transferrin inside clathrin-coated vesicles suggests that transferrin is being taken up by receptor-mediated endocytosis. This process involves the binding of transferrin to specific receptors on the cell surface, followed by the internalization of the transferrin-receptor complex into clathrin-coated vesicles. Facilitated diffusion, antiporters, gap junctions, and ion channels do not involve the formation of vesicles and are not likely mechanisms for transferrin uptake.

You Are Studying How the Protein Transferrin Enters Cells