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    Question

    The macronutrient which is a structural component of

    the cell wall and activates the enzymes is
    A boron dioxide Correct Answer Incorrect Answer
    B carbon monoxide Correct Answer Incorrect Answer
    C nitrogen dioxide Correct Answer Incorrect Answer
    D calcium Correct Answer Incorrect Answer

    Solution

    Calcium  activities enzymes, is a structural component of cell walls, influences water movement in cells and is necessary for cell growth and division. Some plants must have calcium to take up nitrogen and other minerals. Calcium is easily leached.

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