One of the characteristic features of a living cell is that it controls the exchange of electrically charged ions across the cell membrane and therefore the electrical potential of its interior relative to the exterior. This Scholarpedia page is a basic introduction into the mechanisms underlying this process.
Here are the ranges for total cholesterol in adults: 1  Normal: Less than 200 mg/dL. 2  Borderline high: 200 to 239 mg/dL. 3  High: At or above 240 mg/dL.
Explaining HDL Numbers in the Cholesterol Chart. An HDL cholesterol chart contains different numbers than an LDL chart. Optimal rates of HDL levels are 60 or higher; a number between 40 and 59 is considered almost optimal; and having a less than 40 HDL level puts an individual at risk for heart disease.he measurements of good and bad cholesterol tell a physician whether someone is suffering from high cholesterol levels, also referred to as hypercholesterolemia or hyperlipidemia, and needs immediate administrations of medication in addition to dietary and lifestyle changes in order to prevent a possible heart attack.