Facilitated diffusion process in cells enables selective molecule transport across cell membranes through specialized proteins, maintaining cellular homeostasis.

• The role of transport proteins in facilitated diffusion involves two main types: channel proteins forming passages and carrier proteins changing shape to move molecules
• Transport proteins show high selectivity based on molecule characteristics like size, shape, and charge
• Factors affecting facilitated diffusion rate include concentration gradient, protein saturation, and temperature
• This process is crucial for nutrient uptake, ion transport, and cellular signal transduction
• Unlike simple diffusion, facilitated diffusion can transport larger molecules and maintains precise control over molecular movement