BRAINCAKEATP
ATP is the universal energy currency in cells. It has three phosphate groups. The bonds between the three phosphate groups are unstable and have a low activation energy so can be rapidly hydrolysed. The hydrolysis reactions are energy yielding so they can be coupled with energy-requiring reactions.
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Key terms in this lesson
- chloroplast
- The double-membrane-bound organelle in plant cells that is the site of photosynthesis, containing thylakoids (grana) and the stroma.
- oxidative phosphorylation
- The synthesis of ATP using energy released as electrons pass along the electron transport chain, coupled to chemiosmosis, during aerobic respiration.
More in Energy for Biological Processes
- Chloroplasts
- Photosynthetic pigments
- Photosystems
- Cyclic Photophosphorylation
- Non-cyclic Photophosphorylation
- Chemiosmosis
- Calvin Cycle
All 8 lessons in Energy for Biological Processes · All AQA A-level Biology topics