Biology A-Level
maintaining a concentration gradient
What maintaining a concentration gradient means in Biology A-Level, as defined for AQA.
Definition of maintaining a concentration gradient
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Reference: AQA
Keeping the oxygen concentration in the alveolus higher than in the blood arriving in the pulmonary capillaries, and the carbon dioxide concentration lower.
Topics that use maintaining a concentration gradient
- Gas exchange (AQA A-Level)
Related terms
- antagonistic intercostal muscles
- Bronchioles
- Correlation
- counter-current flow
- diffusion at the alveolus
- large surface area
- Lungs
- mesophyll and stomata
Using maintaining a concentration gradient in the exam
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