Vesicles
Cell walls are the small structure. This is what transports the substances.
Cilia
The cell membrane is the structure that regulates the transport of molecules in and out of the cell. It is selectively permeable, allowing certain substances to pass through while restricting others. Transport proteins embedded in the membrane help facilitate the movement of specific molecules across the membrane.
The cell membrane
cell membrane
Vesicular active transport
lysosomes
Vesicular active transport
Vesicular active transport
cell membrane
The structure responsible for transport in a cell is primarily the cell membrane, also known as the plasma membrane. It is a phospholipid bilayer embedded with proteins that facilitate the movement of substances in and out of the cell. Additionally, various organelles, such as the endoplasmic reticulum and Golgi apparatus, play key roles in intracellular transport and processing of proteins and lipids. Together, these structures ensure the proper distribution of materials essential for cellular function.
The process of regulating the transport of substances in and out of the cell is called cellular transport. This includes processes like active transport, passive transport, and facilitated diffusion, which help maintain the cell's internal environment by controlling the movement of molecules across the cell membrane. The cell membrane itself plays a crucial role in regulating this transport through various protein channels and pumps.
Exocytosis is the process by which cells release substances by vesicle fusion with the plasma membrane, allowing bulk transport of molecules out of the cell.