ATP is called the energy currency of the cell, and of life, because it is the energy molecule that all cells need in order to do anything within the human body. The molecule is used like a battery within cells and allows the consumption of one of its phosphorous molecules.
Once the cell's phosphorous is used it becomes ADP, and in the mitochondria, the phosphorous is returned through a system called cellular respiration. During cellular respiration, if oxygen is available, the mitochondria can produce 36 to 38 ATP per reaction through aerobic respiration. If there is an oxygen debt when the muscles have used all of their supplies, only two ATP can be supplied through anaerobic respiration.Learn More
Adenosine triphosphate, or ATP, is a molecule that stores all the energy required for cells to function. It is present in the nucleoplasm and cytoplasm of every cell. All of the energy needed to perform physiological operations is directly obtained from ATP.Full Answer >
Buffer systems in the human body are composed of a weak acid or base, along with its conjugate acid or base. This system prevents large fluctuations in the body and cells' pH due to an addition of a strong acid or base.Full Answer >
Chief cells are a vital part of the digestive and skeletal systems of the human body. They are found in the stomach and in the parathyroid. They secrete substances necessary for certain biological functions.Full Answer >
The ATP-PC energy system is the system by which the body fuels 10 to 20 seconds of intense exercise by using stored ATP, the high-energy molecule that fuels muscles, and then through phosphocreatine, which is quickly converted to ATP to further fuel muscle contractions. This system is also sometimes called the ATP-CP energy system, because phosphocreatine is also known as creatine phosphate.Full Answer >