What groups are all the elements that make up the living are divided into?

The chemical elements that make up organic matter and cell structure are divided into three groups. The first group is the largest – macronutrients. They make up 99.9% of the cell composition. These are oxygen, carbon, hydrogen, nitrogen, magnesium, calcium and others. The second group is trace elements. They occupy 0.1% of the composition. These are the chemical elements that are needed to regulate vital functions. The third group is ultramicroelements. These are the substances that simply accumulate in the cell. These are mercury, uranium, lead and others.