Final answer:
The vesicles formed during phagocytosis or endocytosis typically fuse with lysosomes, which is option C) lysosome. Lysosomes contain digestive enzymes that help in breaking down the materials within the vesicles.
Step-by-step explanation:
Vesicles formed during phagocytosis or endocytosis often fuse with the membrane of lysosomes. The correct answer to the question is C) lysosome. Both phagocytosis and endocytosis involve the cell ingesting substances by engulfing them to form a vesicle. During phagocytosis, the cell consumes large particles or even other cells, while endocytosis allows the cell to take in fluids and smaller particles.
Once the vesicle is formed inside the cell, it merges with a lysosome. Lysosomes are specialized organelles containing enzymes that break down and digest the contents of the vesicle. This merger facilitates the breakdown of material inside the vesicle, a process that is essential for degrading unwanted cellular debris, pathogens, and for obtaining nutrients from engulfed substances. The enzymes within lysosomes are capable of breaking down a wide range of biomolecules such as proteins, nucleic acids, carbohydrates, and lipids.