👉 The participate fluid, also known as the fluid membrane or cellular membrane, is a semi-permeable barrier that surrounds cells and regulates the exchange of materials between the cell's interior and its external environment. Composed primarily of a lipid bilayer with embedded proteins, it controls the passage of substances such as water, ions, nutrients, and waste products, maintaining cellular homeostasis. This dynamic structure allows for selective permeability, ensuring that essential molecules can enter while keeping harmful substances out, thus playing a crucial role in cellular function and communication.
