Membrane transport is a field of study focused on the movement of molecules across cell membranes. This process is crucial for maintaining cellular homeostasis, allowing cells to take up essential nutrients, expel waste products, and communicate with their environment. Membrane transport involves a variety of mechanisms, including passive diffusion, facilitated diffusion, active transport, and vesicular transport. Understanding how molecules are transported across membranes is essential for understanding important cellular processes and developing new treatments for diseases related to membrane transport dysfunction.