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- 1. Multiple Choice
Which of the following correctly describes the purpose of digestion?
To break down complex food molecules into simple soluble molecules
To make complex food molecules from simple soluble molecules
To make use of simple soluble food molecules
To remove complex food molecules from the body
- 2. Multiple Choice
Large food molecules need to be broken down to be small enough to pass through cell membranes.
True
False
- 3. Multiple Choice
People in the Arctic region live in conditions where temperatures are as low as -40 °C. What should their diet be rich in, to adapt to these conditions?
amino acids
glucose
fats
vitamins
- 4. Multiple Choice
Which statement is NOT true about proteins?
Protein digestion begins in the mouth.
Proteins are used for cell growth and repair.
Proteins are broken down to form amino acids.
Some complex proteins function as enzymes in the body.
- 5. Multiple Choice
Which enzyme does the stomach produce?
amylase
lipase
maltase
protease
- 6. Multiple Choice
Where is the digestion of food completed?
liver
large intestine
stomach
small intestine
- 7. Multiple Choice
Why is the oesophagus muscular?
To break the food into even smaller pieces
To produce enzymes to digest food
To push food from the mouth into the stomach
To move the food back and forth in two directions
- 8. Multiple Choice
Where does carbohydrate digestion begins?
liver
mouth
oesophagus
stomach
- 9. Multiple Choice
Where does protein digestion begins?
large intestine
mouth
small intestine
stomach
- 10. Multiple Choice
Where does fat digestion begins?
colon
liver
small intestine
stomach
- 11. Multiple Choice
Select all the enzymes present in the intestinal juice.
amylase
lipase
maltase
protease
- 12. Multiple Choice
Select all the enzymes present in the pancreatic juice.
amylase
lipase
maltase
protease
- 13. Multiple Choice
Which of the following kills bacteria in the human alimentary canal?
gastric juice
mucus
pancreatic juice
saliva
- 14. Multiple Choice
Which food is unsuitable for a person who cannot secrete enough bile?
butter
lean meat
spinach
rice
- 15. Fill in the Blank
What are the names of the products formed by action of lipase on small fat droplets?
- 16. Fill in the Blank
What is the name of the product formed by action of maltase on maltose?
- 17. Fill in the Blank
What is the name of the product formed by action of protease on polypeptides or smaller protein molecules?
- 18. Fill in the Blank
Name the enzyme that acts on starch.
- 19. Multiple Choice
What colour will starch turn brown iodine solution into?
blue-black
colourless
red
yellow
- 20. Multiple Choice
Which of the following is a physical digestion?
Bile emulsifies fats into smaller fat droplets.
Glucose formed by maltase in the small intestine.
Protease breaks down the proteins.
Salivary amylase mixes with starch in the mouth.
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