The process by which cholesterol is transported into the cell by the binding of LDL to its receptor and the internalization of the receptor-LDL complex is
A) facilitated transport.
B) active transport.
C) cotransport.
D) endocytosis.
E) exocytosis.

Question

Quizplus · Accepted Answer

The process described involves the binding of LDL to its receptor and the subsequent internalization of the receptor-LDL complex, which is a form of receptor-mediated endocytosis. Facilitated transport and active transport both involve the movement of molecules across a membrane but do not involve internalization of the molecule. Cotransport refers to the movement of two molecules together across a membrane, which is not applicable in this scenario. Exocytosis is the opposite process of endocytosis, where materials are released from the cell rather than taken in, and is not involved in the uptake of LDL by the cell.

The Process by Which Cholesterol Is Transported into the Cell