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A-Level Biology OCR A

Cell Plant Molecules Outline Structure Function Wall Made

The plant cell wall, composed of cellulose, provides structural support, protection, and shape to plant cells, allowing them to become turgid without bursting.

The plant cell wall, made of cellulose fibrils, provides protection, shape, and rigidity to plant cells, allowing them to withstand turgor pressure. It is freely permeable and contains plasmodesmata for cell-to-cell transport.

Front Outline the structure and function of a plant cell wall.
Back Plant cell wall - made of fibrils of cellulose embedded in a matrix of other molecules
  • Protects the cell from pathogens, gives the cell its shape
  • High tensile strength allows plant cells to become turgid and press against the cell wall, making the cell rigid which supports both the cell and the plant as a whole
  • Freely permeble - gaps for important molecules to get thru
  • Plasmodesmata are connections of cytoplasm through cell walls and allow transport of substances between adjacent cells

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