Biology 9700 · AS & A Level · Carbohydrates and lipids

Carbohydrates and lipids — practice question

The diagram illustrates how the alternating arrangement of $\beta$-glucose monomers in a chain enables hydrogen bonds to develop between neighbouring monomers. Hydrogen bonds in cellulose influence tensile strength (the capacity to resist pulling forces without breaking). In what way do the hydrogen bonds shown in the diagram make cellulose a suitable substance for a cell wall?

  • AThe hydrogen bonds add additional tensile strength along individual cellulose molecules within the cell wall.
  • BThe hydrogen bonds create stronger crosslinks between adjacent cellulose molecules, adding to the tensile strength of the cell wall.
  • CStronger hydrogen bonds form between adjacent cellulose molecules, adding to the tensile strength of the cell wall.
  • DCellulose molecules within a cellulose microfibril have a stronger link between them, increasing the tensile strength of the cellulose microfibrils.

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