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- 1. Multiple Choice
What is the basic unit of starch?
glucose
sucrose
amino acids
fatty acids
- 2. Multiple Choice
What are proteins made up of?
glucose
sucrose
amino acids
fatty acids
- 3. Multiple Choice
What are the two components that make up a fat molecule?
amino acids & glucose
fatty acids & glycerol
water & sucrose
fatty acids & amino acids
- 4. Multiple Choice
Which of the following are reducing sugars?
glucose
fructose
maltose
sucrose
- 5. Multiple Choice
Which of the following are complex sugars?
cellulose
starch
sucrose
glycogen
- 6. Multiple Choice
Which of the following is not a reducing sugar?
sucrose
glucose
maltose
lactose
- 7. Multiple Choice
Benedict's solution is used to test for the presence of reducing sugars.
What colour change shows the presence of reducing sugars?
blue to orange-red
blue to purple
orange-red to blue
purple to blue
- 8. Multiple Choice
Which chemical is used to test for the presence of starch in a food sample?
Benedict's solution
Iodine solution
Biuret solution
Ethanol solution
- 9. Multiple Choice
A sample of food contains proteins and reducing sugars.
Which food test results show this?
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.
- 10. Multiple Choice
A food sample is known to contain fats.
What will the student observe when a ethanol emulsion test is performed on it?
The solution remains clear.
The solution turns yellow.
A cloudy white emulsion is formed.
A cloudy yellow emulsion is formed.
- 11. Multiple Choice
What is the role of proteins in living organisms?
insulation
repair of worn out parts
make antibodies
make enzymes and hormones
- 12. Multiple Choice
What is the role of fats in living organisms?
Insulation
Energy source and store
Make hormones
Solvent for fat-soluble vitamins
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