GB Life Processes

If by an unknown accident the acid secreting cells of the stomach wall of an individual are damaged. Digestion of which one of the following biomolecule will be affected to a greater extent?

  1. Protein only
  2. Lipid
  3. Carbohydrate only
  4. Protein and Carbohydrate


Stomach produces pepsin which is activated by HCl. Since pepsin is protein digesting enzyme, hence if acid secreting wall gets damaged then Pepsin activation will be reduced and hence Protein Digestion will be affected.

Sometimes cells in the stomach lining are damaged by a factor other than an acid attack and are unable to make hydrochloric acid. Without enough acid, protein digestion in the stomach is difficult and bacterial overgrowth can occur.

The correct option is A.