large surface area
What large surface area means in Biology A-Level, as defined for AQA, OCR.
Definitions of large surface area
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Reference: AQA
A feature of gas exchange surfaces that provides more space for diffusion, shown by branching tracheoles, folded mesophyll or numerous gill lamellae.
Provides more space for exchange, increasing the number of molecules that can cross at once and raising the rate of exchange.
Topics that use large surface area
- Gas exchange (AQA A-Level)
- Exchange surfaces (OCR A-Level)
Related terms
- Adaptations of exchange surfaces
- Airway structure and support
- Alveolar and capillary adaptations for diffusion
- antagonistic intercostal muscles
- Antagonistic muscle action
- Bronchioles
- Concentration gradients
- Correct use of the light microscope
Using large surface area in the exam
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