Depending on the particular chemistry the precipitate may or may not settle. Precipitation occurs when a <i>medium</i> in which a substance had previously been absorbed/dissolved, suffers a change so that the substance can no longer be supported in suspension.
Cholesterol is a soft, waxy substance found in all of your body's cells. Your body needs it in order to work properly. This is because your body uses cholesterol to hold cells together. Your body also uses it to make hormones, vitamin D, and substances that help you digest foods.holesterol is a soft, waxy substance found in all of your body's cells. Your body needs it in order to work properly. This is because your body uses cholesterol to hold cells together. Your body also uses it to make hormones, vitamin D, and substances that help you digest foods.
1 High-density lipoproteins. 2  These lipoproteins are often referred to as HDL, or good, cholesterol. 3  They act as cholesterol scavengers, picking up excess cholesterol in your blood and taking it back to your liver where it's broken down. 4  The higher your HDL level, the less bad cholesterol you'll have in your blood.holesterol is a waxy substance that's found in all of your cells and has several useful functions, including helping to build your body's cells. It's carried through your bloodstream attached to proteins. These proteins are called lipoproteins.