COPY: GCSE Biology Food Tests Practical Quiz
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Questions and Answers

Which type of sugars does the Benedict's test detect?

  • Reducing sugars (correct)
  • Both reducing and non-reducing sugars
  • Complex sugars
  • Non-reducing sugars

    • What color change indicates the presence of starch in the iodine test?

  • Green
  • Blue-black (correct)
  • Yellow
  • Red

    • In the buret test for proteins, what color change indicates the presence of proteins?

  • Red to yellow
  • Blue to pink or purple (correct)
  • Green to orange
  • Blue to green

    • What is the purpose of adding three drops of the Sudan 3 stain solution in the test for lipids?

    <p>To create a layer at the top of the test tube (D)</p> Signup and view all the answers

    What is the first step in preparing a food sample for the different food tests mentioned in the text?

    <p>Crush it with a pestle and mortar (A)</p> Signup and view all the answers

    Which test is a simpler test for starch?

    <p>Iodine test (D)</p> Signup and view all the answers

    What does the Sudan 3 test specifically detect?

    <p>Lipids (A)</p> Signup and view all the answers

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