ATP is resynthesised by the condensation of ADP and Pi, catalysed by ATP synthase during photosynthesis or respiration
Cells rebuild ATP by joining ADP and inorganic phosphate (Pi) together. The enzyme ATP synthase catalyses this reaction during photosynthesis and respiration.
Formula
ADP + Pi → ATP (condensation, catalysed by ATP synthase)
Real World
During the 2012 Tour de France, Chris Froome's muscle cells were continuously resynthesising ATP via ATP synthase in mitochondria — without this, sustained pedalling for hours would be biochemically impossible.
Exam Focus
State that ATP synthase catalyses the reaction and that it is a condensation reaction producing water — both details are commonly missed.
Evaluation Scaffold
A four-step framework for high-quality evaluation. Use this for 'assess', 'evaluate', and 'to what extent' questions.
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