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Question
Biology
Posted 3 months ago

Which is true of active transport?
It requires energy.
It does not require energy.
It will sometimes require energy, and sometimes not require energy.
It goes with the concentration gradient.
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Answer from Sia
Posted 3 months ago
A
Key Concept
Active Transport Requires Energy
Explanation
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. This process requires energy, often in the form of ATP, because it is moving substances against their natural direction of movement.

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