The chemical formula for the expenditure/release of ATP energy can be written as: a) in chemicalese: ATP ----> ADP + energy + Pi. b) in English Adenosine Triphosphate produces Adenosine diphosphate + energy + inorganic Phosphate. An analogy between ATP and rechargeable batteries is appropriate.
Urinal drug tests: Urine is analyzed to search for traces of nicotine. While it may only persist in the body for 3-4 days after consuming tobacco products urine tests have been known to discover traces of nicotine for up to 15-20 days even with passive smokers.
Its metabolite, cotinine, can be detected for as long as 4 to 7 days depending on the amount of nicotine consumed. For heavy smokers, it may be detected up to seven to fourteen days. You are beginning to see how challenging it is to adequately answer the question of How Long does Nicotine Stay In Your System.