What type of vesicle is formed when the plasma membrane surrounds a particle outside the cell?

When the plasma membrane surrounds a particle outside the cell, it forms an endocytic vesicle through a process known as endocytosis. During this process, the cell membrane envelops the external particle, eventually pinching off to create a vesicle that brings the particle into the cell. This mechanism is essential for various cellular functions, such as nutrient uptake and immune response, and allows cells to interact with their environment.

Lysosomes are specialized organelles that digest and break down waste materials and cellular debris, but they are not involved in the direct engulfing of external particles. Exocytic vesicles are related to the process of exocytosis, where substances are expelled from the cell. Peroxisomes are organelles involved in the metabolism of fatty acids and detoxification but do not function in the context of engulfing external particles. Thus, the formation of an endocytic vesicle is specifically associated with the plasma membrane enclosing material from the outside environment.