CAIE IGCSE Biology EXTENDED 3.3.2 Importance of active transport
CAIE IGCSE Biology EXTENDED 3.3.2 Importance of active transport
Practise explaining why active transport matters for moving ions or molecules across membranes, especially mineral uptake by root hairs.
How this is tested
- state root hair cells as the plant cells that absorb mineral ions by active transport
- explain why mineral ions can enter root hairs from soil even when the gradient is unfavourable