What is characteristic of the chemical composition of a cell?

Any cell is made up of various chemicals. They can be divided into three groups. These are macronutrients. These include the following chemicals: oxygen, carbon, hydrogen. These substances occupy up to 90% of the composition of the cell, since oxygen and hydrogen form water, and the cell is 72% water. The cell also has trace elements: cobalt, boron, zinc, iodine, bromine. The third group of chemicals that make up the cell are ultramicroelements. These are uranium, radium, gold, cesium, beryllium and mercury.