Question

which statement about electrolytes is true?
o electrolytes help carry electrical impulses from one cell to another.
o electrolyte concentrations decrease due to the loss of body water.
o the major electrolytes lost in sweat are hydrogen, potassium, and iron.
o electrolyte replacement during physical activity is beneficial.

Explanation:

Electrolytes are ions in body fluids that conduct electricity. They play a crucial role in nerve - impulse transmission (carry electrical impulses between cells). Loss of body water can cause an increase in electrolyte concentration (hypernatremia for sodium, for example). The major electrolytes lost in sweat are sodium and chloride, not hydrogen, potassium, and iron as stated. While electrolyte replacement during physical activity can be beneficial, the most fundamental and correct property among the options is their role in electrical impulse transmission.

Answer:

Electrolytes help carry electrical impulses from one cell to another.