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A-Level Biology OCR A

Energy Atp Molecule Add Glucose Explain Source Metabolic

ATP is a more efficient and immediate energy source than glucose because energy is released in small, usable amounts through phosphate bond hydrolysis, suitable for cellular reactions.

ATP is a more efficient and immediate energy source than glucose because energy is released in small, usable amounts through phosphate bond hydrolysis, suitable for cellular reactions.

Front Explain why ATP is a better, immediate source of energy for metabolic reactions than glucose.
Back ATP vs glucose:
  • It is more energy efficient to add or remove phosphate groups than to add and subtract elements from glucose molecule
  • One glucose molecule has a lot more energy than one ATP molecule - if it was all released at once cell would die & energy would be wasted bc cellular processes require relatively small amounts of energy which ATP is suited for

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