NEET Biology question
Not in NEET syllabus
Which of the following statements are correct regarding the secretion of oxyntic cells? (i) It denatures proteins and softens fibrous connective tissues in food. (ii) It activates rennin. (iii) It has a role in maturation of RBCs. (iv) It activates trypsin.
Answer: (C)
Solution
HCl secreted by oxyntic (parietal) cells denatures dietary proteins and softens fibrous connective tissue in food, exposing it to pepsin's action (i, true); it also converts inactive prorennin to active rennin in infants, analogous to pepsinogen activation (ii, true); and, by converting dietary Fe3+ to the more
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