Digestive System MCQ Exam: Quiz!

12 Questions | Total Attempts: 1340

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Digestive System MCQ Exam: Quiz!

Are you preparing for a test on the digestive system? You should take a look at this quiz. It will ask you questions like the function of the enzymes in the mouth, from which organ is bile excreted, the parts that make up the small intestine, and protein digestion. This quiz will support you in preparing for the exam. Don’t forget to retrieve your certificate when you are done with the quiz.


Questions and Answers
  • 1. 
    Which of the following enzymes acts in the mouth?
    • A. 

      Pepsin (protease)

    • B. 

      Trypsin (protease)

    • C. 

      Amylase (carbohydrase)

    • D. 

      Lipase

  • 2. 
    Bile is manufactured in the
    • A. 

      Pancreas

    • B. 

      Liver

    • C. 

      Gall bladder

    • D. 

      Duodenum

  • 3. 
    Which of the following are parts of the small intestine?
    • A. 

      Duodenum, jejunum, ileum

    • B. 

      Rectum, colon, anus

    • C. 

      Duodenum, ileum, caecum

    • D. 

      Duodenum, ileum, appendix

  • 4. 
    Which of the following statements are correct?
    • A. 

      Carbohydrates are broken down into glucose

    • B. 

      Proteins are broken down into amino acids

    • C. 

      Lipids are broken down into fatty acids and glycerol

    • D. 

      All of the above

  • 5. 
    What is the function of bile salts?
    • A. 

      To digest starch

    • B. 

      To convert proteins into peptides

    • C. 

      To emulsify fats

    • D. 

      To digest fats

  • 6. 
    The processing of food involves a series of steps.
    • A. 

      Absorption, digestion, ingestion, assimilation, defaecation

    • B. 

      Ingestion, digestion, absorption, assimilation, defaecation

    • C. 

      Egestion, digestion, absorption, assimilation, defaecation

    • D. 

      Defaecation, digestion, absorption, assimilation, ingestion

  • 7. 
    Which of the following is NOT involved in the mechanical (physical) breakdown of food?
    • A. 

      Mastication

    • B. 

      Peristalsis

    • C. 

      Emulsification

    • D. 

      Enzyme action

  • 8. 
    Which of the following is NOT a function of the liver?
    • A. 

      Conversion of glucose to glycogen

    • B. 

      Production of insulin

    • C. 

      Deamination of amino acids

    • D. 

      Detoxification

  • 9. 
    Which of the following could NOT be a product of the stages of protein digestion?
    • A. 

      Monosaccharides

    • B. 

      Amino acids

    • C. 

      Peptides

    • D. 

      Polypeptides

  • 10. 
    Lacteals (lymphatic capillaries) are responsible for the absorption of?
    • A. 

      Carbohydrates

    • B. 

      Proteins

    • C. 

      Fats

    • D. 

      Vitamins

  • 11. 
    How many layers of smooth muscle are found in the wall of the stomach?
    • A. 

      One

    • B. 

      Two

    • C. 

      Three

    • D. 

      Four

  • 12. 
    Where does approximately 90% of digestion take place?
    • A. 

      Stomach

    • B. 

      Small intestine

    • C. 

      Large intestine

    • D. 

      Pancreas

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