Biology 9700 · AS & A Level · Carbohydrates and lipids

Carbohydrates and lipids — practice question

Plant cell walls gain strength from cellulose molecules that are organised into several layers. In each layer, the cellulose molecules all lie in the same direction (parallel). Which row shows the bonds that join neighbouring cellulose molecules within each layer and the arrangement of cellulose molecules in different layers?

  • Aglycosidic; in different directions
  • Bglycosidic; parallel
  • Chydrogen; in different directions
  • Dhydrogen; parallel

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI