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  1. Which process requires cellular energy?

    2. A.

     Passive transport
    B.

     Active transport
    C.

     Both A & B
    D.

     None of the above

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    Answer : Option B

    Explanation :

    In cellular biology, 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. Active transport requires cellular energy to achieve this movement.

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