Physical Education A-Level
Diffusion
What Diffusion means in Physical Education A-Level, as defined for AQA.
Definition of Diffusion
Check what you remember
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Reference: AQA
The passive net movement of gas molecules from a region of higher partial pressure to a region of lower partial pressure, down a partial-pressure gradient.
Topics that use Diffusion
- Respiratory system (AQA A-Level)
Related terms
- Airway narrowing
- Alveolar and muscle exchange
- Baroreceptor
- Baroreceptors
- Carbon monoxide, oxygen transport and aerobic capacity
- Chemoreceptor
- Chemoreceptors
- Chemoreceptors and sensory detection
Using Diffusion in the exam
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