The uptake of cholesterol into cells is an example of
A)phagocytosis.
B)pinocytosis.
C)receptor-mediated endocytosis.
D)receptor-mediated exocytosis.
E)simple diffusion.

Question

Quizplus · Accepted Answer

The uptake of cholesterol into cells is a receptor-mediated process, known as receptor-mediated endocytosis. This process involves the binding of cholesterol to specific receptors on the cell surface, followed by the internalization of the receptor-cholesterol complex into the cell by a process of invagination and formation of clathrin-coated vesicles. This process is more specific and efficient than other forms of endocytosis like phagocytosis and pinocytosis, which are non-selective and tend to internalize a variety of molecules indiscriminately. Receptor-mediated exocytosis is not a known cellular process. Simple diffusion is an example of passive transport and does not involve any receptors.

The Uptake of Cholesterol into Cells Is an Example of