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.
1 LDL normal levels of cholesterol, or bad cholesterol, should be under 130. 2  If it's between 160 and 189, it's high, and if it's 190 or more, it's very high. 3  You must focus on lowering LDL/Bad cholesterol.here are 4 measures you need to take and find out your normal levels of cholesterol. These measures are: LDL, HDL, total cholesterol and cholesterol ratios. Before finding out your cholesterol levels, you need to have a blood test.