Digestive System MCQs with Answers

Why does a piece of bread become wet when chewed in the mouth and it tastes sweet?

• A.Due to the enzyme pepsin present in saliva that breaks down carbohydrates into sugar
• B.Due to the release of hydrochloric acid in the mouth that converts starch into glucose
• C.Due to the moisture from the tongue dissolving the bread into simple sugars
• D.Due to the action of saliva which contains the enzyme amylase that breaks down starch into sugar

Which is not a tissue layer of the alimentary canal?

• A.Serosa
• B.Mucosa
• C.Secretin
• D.Submucosa

In mouth saliva starts the chemical digestion of ?

• A.Proteins
• B.Carbohydrates
• C.Fats
• D.Vitamins

During digestion the secretion of breakdown the protein.

• A.Pepsin
• B.Trypsin
• C.Both A and B
• D.Amylase

How does the stomach contribute to digestion?

• A.It absorbs nutrients directly into the bloodstream
• B.It filters toxins from the food before absorption
• C.It produces bile to emulsify fats
• D.It breaks down food into a liquid mixture using muscles and gastric juices

Past Paper MCQ

Which is the largest gland in the human body?

• A.Pancreas
• B.Liver
• C.Thyroid
• D.Pituitary

The function of oesophagus in digestive system is to ?

• A.Digest proteins
• B.Absorb nutrients
• C.Pass the food to the Stomach
• D.Produce digestive enzymes

The liver ?

• A.Detoxifies harmful substances in the blood
• B.Produces bile to help digest fats
• C.Stores glycogen and vitamins
• D.All of these are the functions of the liver

The appendix is attached to which part of the large intestine?

• A.Rectum
• B.Cecum
• C.Colon
• D.Ileum

What is the primary function of the gallbladder in the digestive system?

• A.Produces bile
• B.Stores bile
• C.Digests fats
• D.Absorbs nutrients