Question

If the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?

• A. Steapsin will be more effective.
• B. Proteins will not be adequately hydrolysed by pepsin into proteases and peptones.
• C. The pancreatic enzymes, specially the trypsin and lipase will not work efficiently.
• D. The pH of the stomach will fall abruptly.

Answer 1

The correct option is B Proteins will not be adequately hydrolysed by pepsin into proteases and peptones.

Parietal cells secrete conc.Hydrochloric acid (HCl). HCl makes the medium acidic (pH 1.8), which is required for the activation of a protein digesting enzyme called pepsin. If parietal cells become partially non-functional, proteins will not be adequately hydrolysed by pepsin into proteases and peptones. The pH of the stomach will increase.