Which Vesicular Transport Process Occurs Primarily in Some White Blood

Question

Which vesicular transport process occurs primarily in some white blood cells and macrophages?
A) exocytosis
B) phagocytosis
C) intracellular vesicular trafficking
D) pinocytosis

Accepted Answer

Phagocytosis is the process by which some white blood cells and macrophages engulf and internalize large particles, such as pathogens and cell debris, into vesicles called phagosomes. The phagosomes then fuse with lysosomes for degradation of the engulfed material. This is a form of vesicular transport that occurs primarily in these specialized cells. Exocytosis, intracellular vesicular trafficking, and pinocytosis are not specific to these cell types and occur in a variety of cell types for different purposes.