The fibres of the cell wall are laid in different direction to add strength.The cell wall is rigid and strong, preventing the cell from bursting as it absorb water by osmosis.In endocytosis, the cell surface membrane pinches in, forming a vesicle that contains material from outside the cell. Endocytosis occurs when a substance is entering the cell.After which, the vesicle releases the substance to the outside of the cell. Firstly, the substance moves into a vesicle, which joins with the cell surface membrane, and becomes part of it.
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