AP BIOLOGY

Detailed explanation-1: -Pinocytosis is an active, energy consuming process where extracellular fluid and solutes are taken up into a cell via small vesicles. It is a type of endocytosis, which refers to the uptake of substances by a cell. Phagocytosis and receptor-mediated endocytosis are other types of endocytosis.

Detailed explanation-2: -Classification of Endocytosis 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: -Both endocytosis and exocytosis need energy in the form of adenosine triphosphate or ATP, used in the movement of the substances in and out of the cell. There are three types of endocytosis-phagocytosis, pinocytosis and receptor-mediated endocytosis.

Detailed explanation-4: -It can therefore be described as active transport rather than passive transport. Pinocytosis is not specific, although the process can be triggered by a molecule such as a certain ion, the resulting vesicle is a collection of whatever else is in the surrounding extracellular fluid.