Biology A (Salters-Nuffield) A-Level
Cation channels
What Cation channels means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Cation channels
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Reference: Pearson Edexcel
Structures kept open by rhodopsin in darkness so Na⁺ enters, and closed by light so Na⁺ entry falls.
Topics that use Cation channels
- Topic 8: Grey Matter (Pearson Edexcel A-Level)
Related terms
- Animal experiments
- Animal models in neuroscience research
- Antagonistic muscle action
- Autonomic control of the pupil
- Benefits
- Cell signalling
- Cerebral hemispheres
- Co-ordination
Using Cation channels in the exam
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