Biology 9700 · AS & A Level · Testing for biological molecules

Testing for biological molecules — practice question

A solution sample was examined for reducing sugar, and the outcome was negative. A different sample from the same solution was then examined for non-reducing sugar, and the outcome was positive. Which part of the non-reducing sugar test causes the glycosidic bonds to break?

  • Aaddition of Benedict’s reagent
  • Baddition of sodium hydroxide
  • Cboiling with hydrochloric acid
  • Dheating to $80^{\circ}\text{C}$

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