Activity-based budgeting (ABB) is based on the outputs of activity-based planning. Activity Dictionary: A listing and description of activities that provides a common/standard definition of activities across the organization.
Transport proteins in the cell membranes regulate the passage of. positive ions and other substances from one side of the membrane to the other. Negative ions follow positive ions and water flows toward the more concentrated solution.
1 Other functions include supplying oxygen and nutrients to tissues, removing waste, transporting hormones and other signals throughout the body, and regulating body pH and core body temperature.  Blood is composed of plasma, red blood cells, white blood cells, and platelets.