Oxygen-16 and Hydrogen-1 Are they becoming positively or negatively charged ions to gain stability?

its first and third is your answer i did the qustion the fourth isnt right

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.