ATP: structure and role
ATP: structure and role

Cells need energy for active transport, muscle contraction, protein synthesis and secretion. They do not usually power these reactions directly with glucose, but with ATP, an immediate energy-transfer molecule.
Step-by-step lessons on AQA A Level Biology ATP, covering ATP. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.