BCECE Medical BCECE Medical Solved Papers-2014

  • question_answer
    Active transport

    A)  releases energy

    B)  requires energy

    C)  produces ATP                        .

    D)  produces a toxic substance

    Correct Answer: B

    Solution :

    Active transport is the movement of a substance from a region of lower concentration to another of higher concentration, i.e., against the concentration gradient. These processes involve movement up a free-energy gradient, they require the expenditure of energy from the breakdown of ATP and are therefore, sensitive to factors, affecting metabolism.


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