Membrane potential is determined by the: number and type of phospholipids present in a membrane. concentration of cholesterol in
a membrane. difference in concentration of ions and charged molecules on the two sides of a cell's plasma membrane. umber and types of ion-channel proteins present in the plasma membrane of a cell.
The pH scale measures the concentration of how acidic or basic something is. The lower the number below 7, is acidic. Above 7 is basic. 7 is waters purest form.
