Transport Proteins

Transport proteins are specialized molecules embedded in cell membranes that help move substances like nutrients, ions, and waste in and out of cells. They act as gatekeepers or carriers, ensuring vital molecules reach their destination and waste is expelled. Some transport proteins work passively, allowing substances to flow along their concentration gradient, while others require energy to move substances against the gradient. These proteins are essential for maintaining the cell’s internal environment, supporting processes like nutrient uptake, waste removal, and communication between cells.