Active transport
Why?
Active transport uses energy to move particles into or out of a cell against the concentration gradient.
A root hair cell uses energy to pump scarce minerals in from the soil, like pushing balls up a slope into a crowded box.
Press the button to pump minerals into a root cell against the gradient.
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A protein pump in a nerve cell membrane uses energy to throw sodium out and pull potassium in.
Interactive labs
No labs for this concept yet.