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.
Quick Answer. The normal range for LDL cholesterol is less than 190 milligram per deciliter, according to MedlinePlus. The HDL cholesterol is normal if it is greater than 40 to 60 milligram per deciliter. Continue Reading.