Cells are regarded as the simplest unit (structural and functional) of life. Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. Membrane proteins that traverse the entire cell membrane alone can serve as a membrane channel. A channel protein aids in the transfer of solutes (water and hydrophilic solutes) from one side of the selectively permeable membrane to the other side of the membrane. Such integral proteins are called as transmembrane proteins. In carrier-mediated transport, solute particles bind to a specific site (receptor) on the carriers or transport proteins present in the cell membrane. Followed by a change in the shape of the carrier and release of solute inside the cell.

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Chapter 3.3, Problem 18BYGO

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Cells are regarded as the simplest unit (structural and functional) of life. Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. Membrane proteins that traverse the entire cell membrane alone can serve as a membrane channel. A channel protein aids in the transfer of solutes (water and hydrophilic solutes) from one side of the selectively permeable membrane to the other side of the membrane. Such integral proteins are called as transmembrane proteins. In carrier-mediated transport, solute particles bind to a specific site (receptor) on the carriers or transport proteins present in the cell membrane. Followed by a change in the shape of the carrier and release of solute inside the cell.

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