Diarrhea is one of the most common causes. It can be caused by eating wrong kind of foods or by overeating. Consumption of contaminated food can lead to bacterial or viral infection in the stomach resulting in diarrhea and cramping of stomach.
Structural Biochemistry/ATP. Adenosine triphosphate (ATP) is a nucleotide that consists of an adenosine and a ribose linked to three sequential phosphoryl (-PO32-) groups via a phosphoester bond and two phosphoanhydride bonds. ATP is the most abundant nucleotide in the cell and the primary cellular energy currency in all life forms. The primary biological importance of ATP rests in the large amount of free energy released during its hydrolysis.
The acronym ATP stands for adenosine triphosphate, which is just a description of the molecule's chemical components; an adenine attached to a ribose sugar, and three phosohate groups. What's important here are the phosphates; these are... The ATP molecule basically functions as the power source for the cell. Sometimes it is compared to a battery, which is a pretty fair analogy, but it is more mobile and flexible in its functions than a battery is.