OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Calculating AreasBacteria can be grown as a visible culture on agar jelly. In a disc-diffusion test, a paper disc containing an antibiotic is placed on an agar plate inoculated with bacteria. The antibiotic diffuses outwards through the agar.
- Revise: Calculating Bacterial Areas
A nutrient-containing gel on which microorganisms can be cultured.