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djverab [1.8K]
3 years ago
10

Under what circumstances does membrane transport always require energy?

Biology
1 answer:
kondor19780726 [428]3 years ago
8 0
It requires energy when a substance must travel against a concentration gradient through the membrane
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It is pertinent to understand what hypertonic, hypotonic, and isotonic solution means before setting out to explain how a cell reaches equilibrium in each type of solution.

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