Which of the Following is a Passive Process for Material

Question

Which of the following is a passive process for material movement across a plasma membrane?
A) receptor-mediated endocytosis
B) phagocytosis
C) exocytosis
D) active transport
E) facilitated diffusion

Accepted Answer

Facilitated diffusion is a passive process where a substance moves down its concentration gradient across a membrane with the help of a transport protein. Receptor-mediated endocytosis, phagocytosis, and exocytosis are all active processes that require energy to move substances across the membrane. Active transport also requires energy, and involves the movement of a substance against its concentration gradient.