Report Abuse. The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce.eport Abuse. The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce.
Energy is always required to break bonds and always is released when bonds are formed, even with ATP, but the part that is omitted is that more molecules of water are bound and ordered after the ATP hydrolysis than before and so more ordering plus many more highly energetic hydrogen bonds formed than broken equals a large overall release of energy for the overall process.
The cycle also produces hydrogen atoms, which then continue in another series of biochemical reactions to produce adenosine triphosphate (ATP) and water. ATP is the molecule which stores energy, in the form of phosphate bonds, for later use. In the Citric Acid Cycle, one molecule of acetyl-CoA generates 12 ATPs. When the acetyl is released, CoA is regenerated, which returns to the Citric Acid Cycle to catalyse another reaction.