ATP

Whats ATP

A single molecule of adenosine tri phosphate (ATP) is a nucleotide derivative formed by molecule of ribose, a molecule of adenine and 3 phosphate groups

How is ATP made into ADP + Pi and whats phosphorylation

• ATP can be hydrolysed into ADP + Pi using enzyme ATP hydrolase

• The released inorganic phosphate can be added to another compound, often making the compound more reactive (this is called phosphorylation)

How can ADP + Pi be made into ATP

• ATP is re synthesised by condensation of ADP + Pi

• This reaction is catalysed by enzyme ATP synthase during photosynthesis or during resipiration

ATP properties

• releases energy in small amounts so no energy’s wasted (glucose releases large amounts so results in wasted energy)

• Small and soluble to easily transport around the cell (can move around cytoplasm with ease to provide energy for chemical reactions within the cell) same for glucose

• Only one bond is broken / hydrolysed sp energy’s released immediately (glucose needs several bonds broken)