Final answer:
The statement is true; phagocytosis is a type of endocytosis where cells, notably immune cells like neutrophils, engulf and digest large particles such as invading pathogens.
Step-by-step explanation:
The statement is true: Phagocytosis is a type of endocytosis used by cells to engulf bulk matter, including debris and other cells. Phagocytosis, often described as "cell eating", involves cellular protrusions called pseudopodia that engulf large particles or microorganisms.
This process is crucial for the immune defense, especially in white blood cells like neutrophils which use phagocytosis to remove invading pathogens. Engulfed particles are enclosed in vesicles called phagosomes which then fuse with lysosomes, leading to the digestion of the engulfed material. Contrasting with phagocytosis is pinocytosis, or "cell drinking", where cells ingest extracellular fluid including dissolved substances via small vesicles. Moreover, unlike phagocytosis, receptor-mediated endocytosis is highly selective for specific substances that bind to cell surface receptors.
True, phagocytosis is a type of endocytosis used by cells to engulf bulk matter, including debris and other cells. In this process, the cell membrane surrounds the particle, pinches off, and brings the particle into the cell. For example, when microorganisms invade the human body, a type of white blood cell called a neutrophil will remove the invaders by phagocytosis.