# What is the function of ATP?

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#### Explanation

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#### Explanation:

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Jan 31, 2016

Adenosine triphosphate (ATP) transports chemical energy within cells for metabolism.

#### Explanation:

Adenosine triphosphate (ATP) is thought of as the "molecular currency" for energy transfer within the cell.

Function:

ATPs are used as the main energy source for metabolic functions. They are consumed by energy-requiring (endothermic) processes and produced by energy-releasing (exothermic) processes in the cell. It does this by giving either losing or gaining a phosphate group.

ATP (high energy) $\iff$ ADP (low energy)
The pair is ADP (adenosine diphosphate) with two phosphates and ATP (adenosine triphosphate). Energy is transferred as a matter of how many phosphate group the molecules have. ATP energizes the endothermic process thus becoming ADP. While ADP can take up energy from an exothermic process and gain a phosphate (phosphorylated) to become ATP.

Structure:
ATP is made up of an one adenosine - ribose sugar and adenine - that is attached to three phosphate group (triphosphate).

Where they come from:
There are multiple pathways to produce ATP including fermentation, cellular respiration, and photophosphorylation.

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