During diffusion the molecules move in constant random motion. <span>The </span>net movement<span> of a substance from a region where it has a higher concentration to a region where it has a lower concentration, due to random molecular motion, is called </span>diffusion<span>. Diffusion is a widespread and important process which occurs in both living and non-living systems. </span>
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A
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A major role of the cell wall is to form a framework for the cell to prevent over expansion.
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Sure I will…..IN UR DREAMS
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~HappyQueen~
Answer: The cell membrane is selectively permeable.
Explanation: going thru last year notes
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Anything that has mass and occupies space.
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