The movement of specific molecules into a cell by the infolding of vesicles containing proteins with receptor sites specific to the molecules being taken in.Group of answer choicesendocytosisplasmolysisfacilitated diffusionautophagyreceptor-mediated endocytosisphagocytosisexocytosispinocytosisNext

The process described is receptor-mediated endocytosis. Here's a step-by-step explanation:

1. Specific molecules outside the cell bind to specific receptor proteins located on the cell's surface. These proteins are embedded in regions of the cell membrane that are rich in certain types of lipids and proteins and are called coated pits.

2. Once the molecules bind to their receptors, the coated pit invaginates, or folds inward.

3. The invagination forms a vesicle, a small, spherical compartment separated from the cytosol by at least one lipid bilayer.

4. The vesicle then pinches off from the cell membrane and moves into the cell, carrying the specific molecules along with it.

This process allows the cell to take in specific molecules from the extracellular environment that may not be able to enter the cell by simply diffusing across the cell membrane.