bioelementsOnline version In this activity you will discover the biological elements that living beings should have both primary and secondary by Diana carreto 1 primary bioelements 2 secondary bioelements hydrogen: form water is vital for life oxygen: the respiration by which organisms have energy carbon: they are part of carono dioxide carbohydrates: the body's fuel is transformed into glucose Nitrogen: plants transform nitrogen into amino acids sodium: regulates the alternating pressure and liquids in organisms potassium: these regulate in the cells and is necessary for nerve activity calcium: it is indispensable as bones or teeth Phosphorus: combines with calcium and makes bones and teeth zinc: acts as a catalyst in many body reactions