I'm assuming you mean the molecular compound

and it's name is Hydronium. Hope this helps :)
It delivers energy as it circulates blood
In a cell, there are several parts of it that are there to stop this from happening. Cancerous cells do not have the genetic code to stop growing and reproducing. A regular cell will actually destroy itself it there is a mutation. If it does not get destroyed, it could potentially be tumorous, then it could eventually be cancerous.