Biology 9700 · AS & A Level · Carbohydrates and lipids

Carbohydrates and lipids — practice question

A polysaccharide that occurs naturally and is synthesised in a plant consists of a branched chain of $\alpha$-glucose. The unbranched sections of the molecule are joined by $\alpha$-$1,6$ glycosidic bonds, and only a few branches are present, with each branch formed by either an $\alpha$-$1,3$ glycosidic bond or an $\alpha$-$1,4$ glycosidic bond. Which polysaccharide has a structure most like the one described?

  • Aamylopectin
  • Bamylose
  • Ccellulose
  • Dglycogen

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