AP BIOLOGY

Detailed explanation-1: -During pinocytosis, cells take in molecules such as water from the extracellular fluid. Finally, receptor-mediated endocytosis is a targeted version of endocytosis where receptor proteins in the plasma membrane ensure only specific, targeted substances are brought into the cell.

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: -While phagocytosis involves the ingestion of solid material, pinocytosis is the ingestion of surrounding fluid(s).

Detailed explanation-4: -Pinocytosis refers to the uptake of extracellular fluids and dissolved solutes, such as fat droplets, vitamins, and antigens. The term pinocytosis is derived from the Greek word “pino, ” meaning “to drink, ” and “cyto, ” meaning “cell.” Therefore, the process of pinocytosis can be thought of as cellular drinking.

Detailed explanation-5: -Cells ingest fluid, molecules, and particles by endocytosis, in which localized regions of the plasma membrane invaginate and pinch off to form endocytic vesicles.