vesicle theory

Vesicle theory describes how cells transport materials internally. It proposes that substances are packaged into small, membrane-bound sacs called vesicles. These vesicles bud off from one part of the cell, carry their contents through the cytoplasm, and fuse with another membrane to deliver their cargo. This process allows cells to move nutrients, proteins, and waste efficiently and precisely, maintaining proper function and communication among cell components. Essentially, vesicles act like tiny delivery trucks within the cell, ensuring materials reach their correct destinations effectively.