One function of HCI secreted in the stomach is to convert pepsinogen into the active enzyme pepsin. Why don't stomach cells simply secrete pepsin instead? A. Pepsin is denatured and rendered inactive in solutions with low pH. B. Adequate amounts of pepsin are already manufactured by the pancreas. C. Only the pepsinogen version is able to stabilize fat-water emulsions. D. If cells produced active pepsin, they would digest their own cellular proteins.
Added by Lisa E.
Close
Step 1
Option B is incorrect because pepsin is produced in the stomach, not the pancreas. Option C is also incorrect because pepsinogen and pepsin are involved in protein digestion, not fat emulsification. Option D is the correct answer. If stomach cells produced active Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 98 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The stomach produces HCl (hydrochloric acid) to aid in the partial chemical digestion of proteins within the stomach. Briefly explain how HCl is produced, its role in aiding digestion, and the mechanisms that protect the lining of the stomach from the corrosive effects of gastric acid. (Use terms including but not limited to - chief cells, parietal cells, pepsin, pepsinogen, H+, and Cl-) Production of HCl: Role of HCl in aiding digestion: Mechanisms that protect the lining of the stomach from the corrosive effects of gastric acid:
Madhur L.
Many digestive enzymes are produced in the pancreas and released into the duodenum. Why, then, has the mammalian stomach evolved the ability to produce pepsinogen?
______ is converted to _______ in the presence of ______ . a. Pepsin, HCl, pepsinogen b. Amylase, HCl, pepsin c. Amylase, maltose, HCl d. Pepsinogen, pepsin, HCl
Shaiju T.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD