A cell needs a receptor in order to absorb LDLs. A disease that interferes with the functioning of these LDL receptors would
A) increase serum cholesterol levels.
B) decrease serum cholesterol levels.
C) halt endocytosis.
D) promote endocytosis.
E) have no effect on serum cholesterol or endocytosis.

Question

Quizplus · Accepted Answer

LDL receptors on cell surfaces are crucial for the uptake of LDL (low-density lipoprotein), which contains cholesterol. If these receptors are not functioning properly due to a disease, the cells cannot absorb LDL from the bloodstream efficiently, leading to increased levels of LDL and thus cholesterol in the blood serum.

A Cell Needs a Receptor in Order to Absorb LDLs