2. Once you recognize that this is a single replacement problem, determine whether the non-bonded element is a cation or anion. Then determine which element it will replace. Remember cations can only replace cations and anions can only replace anions.
If you haven't eaten for several hours and your blood sugar level drops, another hormone from your pancreas called glucagon signals your liver to break down the stored glycogen and release glucose back into your bloodstream.
In addition, the blood cell count can dip due to infection or because white blood cell production has been inhibited. A low white blood cell count, or leukopenia will have a direct effect on your body's immune system. White blood cells are used to fight off infections within the blood stream.