for short-term energy storage in the cell.
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ATP is used to drive most endergonic (energy requiring) processes in cells. The hydrolysis of the terminal phosphate group in ATP, converting ATP into ADP and Pi, releases free energy and that free energy can be used to drive the endergonic reactions.
But ATP is not stable over long periods (the terminal phosphate will spontaneously hydrlyze), so must be used relatively quickly - and therefore, it must be continually produced. The production of ATP (from ADP + Pi) is an energy requiring process. The energy is provided by the catabolism of (typically) sugar by some metabolic pathway, such as glycolysis and aerobic respiration - these are energy releasing processes.
So ATP couples energy releasing processes with energy requiring processes. The energy releasing processes create ATP and then ATP diffuses throughout the cell and its hydrolysis drives uphill (endergonic) processes.
But ATP is not stable over long periods (the terminal phosphate will spontaneously hydrlyze), so must be used relatively quickly - and therefore, it must be continually produced. The production of ATP (from ADP + Pi) is an energy requiring process. The energy is provided by the catabolism of (typically) sugar by some metabolic pathway, such as glycolysis and aerobic respiration - these are energy releasing processes.
So ATP couples energy releasing processes with energy requiring processes. The energy releasing processes create ATP and then ATP diffuses throughout the cell and its hydrolysis drives uphill (endergonic) processes.
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ATP is used to proceed metoblic activities. ATP is our main source of energy, it is produced through celeurlar resperation. and it can also be obtained from dietary substances such as PROTIENS,FATS, and MAIN: Carbohydrates.
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http://en.wikipedia.org/wiki/Adenosine_t…