When a neuron is at rest, the concentration of chloride ion is ____________________.
 | |
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higher in the neuron's cytoplasm than in the extracellular fluid; |
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lower in the neuron's cytoplasm than in the extracellular fluid; |
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higher in extracellular fluid than in the intracellular fluid; |
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lower in extracellular fluid than in the intracellular fluid; |
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both b and c are correct; |
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