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

Testing for biological molecules — practice question

A student performs a semi-quantitative test using Benedict's solution. Which statement concerning this procedure is correct?

  • AIt detects only the presence or absence of glucose.
  • BIt provides an indication of relative reducing sugar concentrations.
  • CThe precipitate needs to be filtered, dried and weighed to give the reducing sugar concentration.
  • DA colorimeter needs to be used to determine the glucose concentration.

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