Here is a good resource:
https://nhlbi.nih.gov/health/educational/lose_wt/eat/calories.htm
The answer is D. Extracellular,
the main ions involve in osmoregulation in a cell are sodium and chloride. Intra-and extracellular distribution of K+ is
influenced, for example, by Na+/K+-ATPase
function, pH, Cellular catabolism and anabolism, Insulin and glucose. Parathormone
and calcitriol are important in the homeostatic regulation of phosphates.
The animal’s anatomy is specifically evolved in and thus tied in with it physiology, thus affecting its interactions with the environment.
All can destroy bacterial cell walls.
