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    Question

    Diffusion is a process by

    which:
    A oxygen can move across the plasma membrane Correct Answer Incorrect Answer
    B organisms can breathe Correct Answer Incorrect Answer
    C organisms can breed Correct Answer Incorrect Answer
    D oxygen can move across the WBC Correct Answer Incorrect Answer

    Solution

    Diffusion is a physical process in which molecules move from areas of higher concentration to areas of lower concentration. Gases (oxygen and carbon dioxide) are diffused into and out of the circulation during respiration. Diffusion happens in plant cells as well. The diffusion of gases is essential to the photosynthesis process in plant leaves.

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