Which structure carries materials from outside to the inside of the cytoplasm?

The structure that carries materials from outside to the inside of the cytoplasm is indeed vesicles/vacuoles. These cellular components are essential for transporting various substances. Vesicles are small membrane-bound sacs that can enclose materials such as proteins, nutrients, or waste products, allowing them to be transported into the cell from the external environment.

When a cell needs to take in materials, vesicles can form through a process called endocytosis. During this process, a part of the cell membrane engulfs the material from outside the cell, and then pinches off to form a vesicle within the cytoplasm. This mechanism is critical for nutrient uptake, signaling molecules, and other essential materials that cells require to function.

In contrast, cell walls provide structural support and protection to the cell but do not play a role in transporting materials into the cytoplasm. The cytoskeleton helps maintain the shape of the cell and aids in the movement of the cytoplasm and organelles but does not directly transport external materials. The Golgi apparatus is involved in modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles but does not create vesicles that transport materials from outside the cell. Thus, vesicles/vacuoles are the