Nutrients
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14 QuestionsShow answers
  • Question 1
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    Q.

    What is the basic unit of starch?

    answer choices

    glucose

    sucrose

    amino acids

    fatty acids

  • Question 2
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    Q.

    What are proteins made up of?

    answer choices

    glucose

    sucrose

    amino acids

    fatty acids

  • Question 3
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    Q.

    What are the two components that make up a fat molecule?

    answer choices

    amino acids & glucose

    fatty acids & glycerol

    water & sucrose

    fatty acids & amino acids

  • Question 4
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    Q.

    What are the elements that make up a protein molecule?

    answer choices

    carbon

    hydrogen

    oxygen

    nitrogen

  • Question 5
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    Q.

    Which of the following are monosaccharides?

    answer choices

    glucose

    fructose

    galactose

    maltose

  • Question 6
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    Q.

    Which of the following are polysaccharides?

    answer choices

    cellulose

    starch

    sucrose

    glycogen

  • Question 7
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    Q.

    Which of the following is not a reducing sugar?

    answer choices

    sucrose

    glucose

    maltose

    lactose

  • Question 8
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    Q.

    Benedict's solution is used to test for the presence of reducing sugars.


    What colour change shows the presence of reducing sugars?

    answer choices

    blue to orange-red

    blue to purple

    orange-red to blue

    purple to blue

  • Question 9
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    Q.

    Which chemical is used to test for the presence of starch in a food sample?

    answer choices

    Benedict's solution

    Iodine solution

    Biuret solution

    Ethanol solution

  • Question 10
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    Q.

    A sample of food contains proteins and reducing sugars.


    Which food test results show this?

    answer choices

    Biuret solution turns purple and iodine solution turns blue-black.

    Biuret solution turns purple and a brick-red precipitate is formed with Benedict's solution.

    Biuret solution turns green and a white emulsion is formed with ethanol and water.

    Iodine solution turns blue-black and white emulsion is formed with ethanol and water.

  • Question 11
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    Q.

    A food sample is known to contain fats.


    What will the student observe when a ethanol emulsion test is performed on it?

    answer choices

    The solution remains clear.

    The solution turns yellow.

    A cloudy white emulsion is formed.

    A cloudy yellow emulsion is formed.

  • Question 12
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    Q.

    What is the role of water in living organisms?

    answer choices

    energy source

    immunity

    insulation

    transport

  • Question 13
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    Q.

    What is the role of proteins in living organisms?

    answer choices

    insulation

    repair of worn out parts

    make antibodies

    make enzymes and hormones

  • Question 14
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    Q.

    What is the role of fats in living organisms?

    answer choices

    Insulation

    Energy source and store

    Make hormones

    Solvent for fat-soluble vitamins

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