Which of the following statements is true?

A. Endocytosis and exocytosis are passive transport mechanisms.

B. Unlike endocytosis, exocytosis does not rely on protein interactions with the plasma membranes.

C. During exocytosis, substances from inside the cell are moved outside.

D. Exocytosis involves infolding of the plasma membrane.

Answer: Option C. During exocytoiss, substances moved from inside the cell are moved outside.

Explanation:

Exocytosis is the process of moving substances from inside (interior) the cell to the outside (exterior) of the cell. This process requires energy and is therefore a type of active transport. Unlike endocytosis, exocytosis does not rely on protein interactions with the plasma membranes. In exocytosis, membrane-bound vesicles containing cellular molecules are transported to the cell membrane. The vesicles join with the cell membrane and depose their contents to the exterior of the cell