Even the cell membranes are made of proteins. Carbon is an important element for all living organisms, as it is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. These elements form the basic building blocks of the major macromolecules of life, including carbohydrates, lipids, nucleic acids and proteins. The first four of these are the most important, as they are used to construct the molecules that are necessary to make up living cells. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. In biology, the elements of life are the essential building blocks that make up living things. Phosphorus is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. It is also used to construct ATP and GTP. Oxygen is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins. Hydrogen is also used to construct ATP and GTP. Hydrogen is used to construct the molecules water and organic compounds with carbon. Carbon is also used to construct the energy-rich molecules adenosine triphosphate (ATP) and guanosine triphosphate (GTP).

Adaptive radiation island chains