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The plasma membranes of some plant cells use transport proteins to move protons out of the cell against their concentration gradient. This is an example of_________________.

User AstroBen
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During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP).
User Baziorek
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Answer:

active transport

Step-by-step explanation:

User Braza
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