Bio-AQA ATP

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Last updated 11:01 PM on 10/7/26
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4 Terms

1
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ATP

A source of energy for biological processes. Metabolic reactions in cells must have a constant, steady supply of ATP

2
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What is ATP made of

Ribose

Adenine

3 phosphate groups


3
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ATP

  • ATP hydrolysis is catalysed by the enzyme ATP hydrolase

  • This reaction breaks ATP into ADP + Pi (inorganic phosphate)

  • The energy released can be coupled to energy requiring reactions in cells

  • The inorganic phosphate (PI) can be used to phosphorylate other compounds, often making them more reactive

  • ATP is resynthesises by a condensation reaction between ADP and PI


This resynthesis is catalysed by ATP synthase during:

  • Photosynthesis

  • Respiration


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Word equation

ATP + Water —— ADP + PI