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Aitchison College Academic Resources.
7 Which row shows the elements and basic units that are used in the construction of large food
molecules?
food molecules elements basic units
A fats carbon, hydrogen, oxygen, nitrogen glucose
B fats carbon, hydrogen, oxygen, nitrogen glycerol
c starch carbon, hydrogen, oxygen glucose
D starch carbon, hydrogen, oxygen glycerol
8 Which nutrient produces a purple colour when mixed with biuret solution?
A fat
B protein
C reducing sugar
D starch
9 Which simple molecules are the basic units of protein?
A amino acids
B fatty acids
Cc sugars
D vitamins
10 Which food-testing reagent shows a positive result when it turns from blue to purple?
A Benedict's solution
B biuret reagent
C ethanol
D iodine solution
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