Q.1
This is the enzyme that works on protein.
  • pepsin
  • HCl
  • Bicarbonate
  • Lactase
Q.2
A substance that speeds up chemical reactions in your body is called a(n)
  • starch
  • sugar
  • enzyme
  • plasma
Q.3
Which of the following is NOT a nutrient?
  • Fats
  • Water
  • Fiber
  • Vitamins
Q.4
The enzyme in saliva that breaks down starches is:
  • Glycogen
  • Amylase
  • Pepsin
  • Actin
Q.5
Which of the following does NOT take place in the mouth?
  • An enzyme is added to food
  • The teeth break food into smaller pieces.
  • Nutrients are absorbed into the bloodstream
  • Mechanical and chemical digestion begin
Q.6
Hydrochloric acid is secreted in the _______________ .
  • oesophagus
  • stomach
  • large intestine
  • small intestine
Q.7
Bile is a digestive juice in our body. Which of the following statements about bile is correct?
  • It is produced by the gall bladder.
  • It contains an enzyme that digests fat.
  • It helps break down fat into droplets.
  • It stimulates peristaltic movement of the small intestine.
Q.8
The stomach wall produces mucus to cover its surface. Which of the following statements correctly describe(s) the function of the mucus?(It kills the bacteria in the ingested food.(It prevents the rubbing of food against the stomach wall.(It protects the stomach wall from the action of the digestive enzymes.
  • (1) only
  • (3) only
  • (1) and (2) only
  • (2) and (3) only
Q.9
In the alimentary canal, most water is absorbed in the
  • oesophagus
  • stomach
  • small intestine
  • colon
Q.10
In the alimentary canal, bacteria in food are mainly killed by
  • saliva
  • mucus
  • gastric juice
  • pancreatic juice
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