How Does the Cell Membrane Facilitate Endocytosis?

💡 The Answer

• During endocytosis, the plasma membrane invaginates to engulf extracellular material into a vesicle.
• Clathrin-coated pits assemble on the inner membrane surface to help pull the membrane inward.
• Dynamin GTPase pinches off the vesicle neck, releasing the vesicle into the cytoplasm.
• This process is essential for nutrient uptake, receptor recycling, and immune surveillance.