Which of the following statements best describes the difference between pinocytosis and receptor-mediated endocytosis?
A) pinocytosis brings only water molecules into the cell, but receptor-mediated endocytosis brings in other molecules as well
B) pinocytosis increases the surface area of the plasma membrane, whereas receptor-mediated endocytosis decreases the plasma membrane surface area
C) pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated endocytosis offers more selectivity
D) pinocytosis can concentrate substances from the extracellular fluid, but receptor-mediated endocytosis cannot

Question

Quizplus · Accepted Answer

Pinocytosis is a form of endocytosis that is nonselective, meaning it engulfs extracellular fluid and any molecules dissolved in it without specificity. Receptor-mediated endocytosis, on the other hand, is highly selective, relying on receptors on the cell surface to bind specific molecules (ligands) and then engulf them into the cell.

Which of the Following Statements Best Describes the Difference Between