Remember these key points: 1  Cell membranes or plasma membranes consist of a phospholipid bilayer with proteins embedded in the membrane. 2  Most of the functions of plasma membranes are handled by the proteins. 3  This arrangement of proteins and phospholipids is often called the fluid mosaic model for a cell membrane.. Cell membranes are based on lipid bilayer. Plasma membranes consist of a lipid bilayer with proteins embedded in the bilayer. The principle lipids are phospholipids. A phospholipid molecules has a hydrophilic head with a phosphate group as part of its structure and two hydrophobic tails.
Hypercalcemia is a condition in which you have too much calcium in your blood. Calcium performs important functions, such as helping to keep your bones healthy. However, too much of it can cause problems.
Too Much Calcium. You don't need to worry about getting too much calcium from food, but you might consume too much if you take supplements. In addition to its role as an electrolyte -- which supports nerve function -- calcium aids in cell communication and keeps your bones strong. Too much calcium, though, and you might face a higher risk of kidney stones.