Final answer:
The uptake of large particulates by a cell is called phagocytosis, which is option 3 in the provided choices. The correct answer is option 3.
Step-by-step explanation:
The uptake of large particulates into a cell is known as phagocytosis. This process is a form of endocytosis, where a cell engulfs a large particle by extending its cell membrane around the particle and then pinching off to form an intracellular vacuole.
Endocytosis can occur in several forms, including phagocytosis for large particulates, pinocytosis for small particles in fluid, and receptor-mediated endocytosis, which is selective for specific substances that bind to cell membrane receptors.
Phagocytosis is often witnessed with white blood cells, which use this mechanism to ingest and destroy pathogens like bacteria. It is an essential function of the immune system to keep organisms healthy. The correct option for the question is 3) Phagocytosis.