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A-Level Biology OCR A

Amylopectin Energy Storage List Properties Functions Starch Polysaccharide

Starch is an insoluble plant polysaccharide composed of amylose and amylopectin, serving as an energy storage carbohydrate.

El almidón es un polisacárido vegetal insoluble en agua, compuesto por amilosa y amilopectina, que sirve como carbohidrato de almacenamiento de energía.

Front List properties and functions of starch.
Back Starch

Properties:
  • Polysaccharide
  • Made up of 20% amylose, 80% amylopectin
  • Insoluble in water
  • Amylopectin - branched every ~20 carbons
  • Amylose - helical structure
  • Compact and energy dense

Function:
  • Storage carbohydrate in plants found in chloroplasts, amyloplasts, storage organs (tubers and seeds)
  • Source of energy

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