The numbers listed represent the number of electrons in the first, second, and third energy levels. respectively. On this basis, which of the following is an unstable or reactive atom?

Electrolytes are essential for numerous physiological processes, and are critical for maintaining homeostasis. Electrolytes such as sodium, potassium, calcium, and chloride regulate nerve and muscle function, fluid balance, blood pressure, and acid-base equilibrium, all of which are essential for normal body function.

A. Collagen: Collagen is the most abundant protein in the human body, forming the structural framework of connective tissues such as skin, bones, tendons, and ligaments. Its fibrous structure provides strength, support, and elasticity to various tissues.

B. Glucose: Glucose is a simple sugar and a primary energy source for cells, not a protein. While essential for metabolism, it does not contribute to the structural protein composition of the body.

C. Hemoglobin: Hemoglobin is a protein found in red blood cells responsible for oxygen transport. Although abundant in blood, its overall quantity in the body is far less than collagen.

D. DNA: DNA is a nucleic acid that stores genetic information. It is not a protein, and while present in all cells, it does not contribute to the protein mass in the body.