Key term for OCR GCSE Biology B, used in Homeostasis.
The difference in the concentration of a substance between two areas, which drives the passive movement of molecules.
concentration gradient appears in OCR GCSE Biology B revision content for Human Physiology, especially Homeostasis and Osmotic Changes.
Human Physiology
Homeostasis • Osmotic Changes
Human Physiology
Human Transport Systems • Cell Membranes
Ecosystems and Photosynthesis
Interdependence in Ecosystems • Transport in Organisms
Ecosystems and Photosynthesis
Plant Transport • Environmental Factors
Ecosystems and Photosynthesis
Plant Transport • Root Hair Cells
Ecosystems and Photosynthesis
Plant Transport • Diffusion, Osmosis and Active Transport
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