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A-Level Biology OCR A

Mixed W  Cell Walls  For  In List Properties

Cellulose is an insoluble polysaccharide made of β-glucose, providing tensile strength and found in plant cell walls for support.

La celulosa es un polisacárido insoluble formado por β-glucosa, que proporciona resistencia a la tracción y se encuentra en las paredes celulares de las plantas.

Front List the properties and functions of cellulose.
Back Cellulose

Properties:
  • Polysaccharide
  • Made up of beta glucose molecules, each consecutive unit is flipped wrt previous
  • Insoluble in water
  • Fully permeable
  • High tensile strength

Function:
  • Component of plant and algal cell walls
  • Provides support for plants - they do not have a skeleton
  • Mixed w cutin for waxy cuticle covering of leaves
  • Mixed w suberin in endodermis of roots
  • Mixed w lignin in xylem walls to make the cell wall impermeable

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