Final answer:
In pinocytosis, engulfed materials are sorted and processed in the cytoplasm of the cell. This process involves the folding of the plasma membrane to form a channel for the entry of dissolved substances, which are then enclosed within a pinocytic vesicle. The vesicle can then merge with other cellular compartments for further processing.
Step-by-step explanation:
In pinocytosis, the sorting and processing of the engulfed materials takes place in the cytoplasm of the cell. Pinocytosis is a process where the plasma membrane folds inward to form a channel, allowing dissolved substances to enter the cell. The channel eventually closes, and the liquid is encircled within a pinocytic vesicle. Once inside the cell, the vesicle can merge with other cellular for further processing and utilization of the engulfed materials.