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.
Cholesterol and Triglyceride Levels. Blood cholesterol is measured in milligrams per deciliter (mg/dL). A deciliter is one-tenth of a liter). NCEP defines a desirable total cholesterol level as less than 200 mg/dL, and levels for most women stay in the healthy or desirable range until middle-age.But between the ages of 45 and 55, women's average total cholesterol rises to almost 220 mg/dL. Between the ages of 55 and 64, those levels average 240 mg/dL.he body is able to meet all these needs by producing cholesterol in the liver. High blood cholesterol is a major women's health issue. According to the Centers for Disease Control and Prevention, one in every six adultsâor 16.3 percent of the populationâhas high cholesterol, defined as 240 mg/dL or higher.