ATP is thermodynamically suited as a carrier of phosphoryl groups in animal cells because of all except it is hydrolyzed in cells without enzyme action.
Why is ATP used as energy source?
- The energy currency of the cell is ATP as it releases a large amount of energy on the release of second and third phosphate group. To be hydrolyzed, ATP requires enzyme action.
- The structure of ATP consists of adenosine backbone, ribose sugar bound to three phosphate groups.
- It is stable inside the cells and also functions as a signaling molecule, helps in synthesis of DNA and RNA.
- Most of the ATP is synthesized in the mitochondria through aerobic respiration.
- ATP serves as a carrier of phosphoryl group because it is stable and used as an intermediate for group transfer reactions.
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