Transport Protein Toolbox and Transport Systems in Living Cells

Diagram showing a transport protein toolbox with five different transport proteins, each illustrating the movement of ions or molecules across a membrane with concentration gradients and energy sources. The proteins are labeled with their names, transport type (active or passive), and energy source. Below, a biological problem involving a sodium-potassium cotransporter and a sodium-glucose cotransporter in a cell membrane is presented with questions about their function and transport mechanisms.