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NEET Sample Paper NEET Sample Test Paper-88

  • question_answer
    Movement of ions or molecules in a direction opposite to that of prevailing electrochemical gradient is known as

    A) diffusion

    B) active transport

    C) pinocytosis

    D) brownian movement

    Correct Answer: B

    Solution :

                [b] Active transport involves movement of ions against concentration gradient involves the expenditure of energy. Diffusion involves the movement of solute particles from region of higher concentration to a region of lower concentration. Pinocytosis is cell drinking. Brownian movement is the random to and fro movement of atoms and molecules.


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