Multiple choice

Which of the following functions is not performed by the bile juice?

  1. Digestion and absorption of lipids

  2. As the route of excretion for bilirubin

  3. Neutralising excess stomach acid before it enters the ileum

  4. It acts as bactericides

  5. Activates pepsin to act on proteins
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This function is performed by gastric juice. Pepsinogen, an inactive zymogen is secreted into gastric juice from both mucous cells and chief cells. Once secreted, pepsinogen is activated by stomach acid into the active protease pepsin that is largely responsible for the stomach's ability to initiate digestion of proteins. Pepsin breaks down proteins into more easily digestible products.

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