OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Scientific ModelsA scientific model selects features of a system and sets out rules for how those features interact. Scientists can use it to make an idea easier to understand, work through a problem, test an explanation or predict what might happen. Exploring a model can also be quicker or more practical than testing every possibility on a living system.