Q. If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?
A) The pancreatic enzymes and specially the trypsin and lipase will not work efficiently
B) The pH of stomach will fall abruptly
C) Steapsin will be more effective
D) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones
Explanation
[Solution from source] Parietal (oxyntic) cells secrete HCl, which converts inactive pepsinogen into pepsin and gives the acidic pH pepsin needs. With less HCl, pepsin is poorly formed and proteins are not properly broken down into proteoses and peptones. The stomach pH would rise, not fall, and pancreatic enzymes work in the intestine, which is unaffected. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.