AP BIOLOGY

Detailed explanation-1: -The other type is pinocytosis (“cellular drinking”), which involves the ingestion of fluid and solutes via small pinocytic vesicles (about 100 nm in diameter). Most eucaryotic cells are continually ingesting fluid and solutes by pinocytosis; large particles are most efficiently ingested by specialized phagocytic cells.

Detailed explanation-2: -Pinocytosis (Cell Drinking) Pinocytosis (“pino” means “to drink”) is a process by which the cell takes in the fluids along with dissolved small molecules. In this process, the cell membrane folds and creates small pockets and captures the cellular fluid and dissolved substances.

Detailed explanation-3: -In pinocytosis, rather than an individual droplet of liquid traveling passively through the cell membrane, the droplet first becomes bound, or adsorbed, on the cell membrane, which then invaginates (forms a pocket) and pinches off to form a vesicle in the cytoplasm.

Detailed explanation-4: -Pinocytosis, however, is common to almost all eukaryotic cell types and is often described as “cell drinking” where cells form invaginations of the cell membrane to create a vesical filled with extracellular fluid [10].

Detailed explanation-5: -Generally, pinocytosis is a form of endocytosis in which small particles suspended in extracellular fluid are brought into the cell through the invagination of the lipid cell membrane (Elefant, 2012). The resulting vesicle can fuse with lysosomes in the cytoplasm to hydrolyze these particles.