Question

Randy was diagnosed with stomach cancer and nearly all of his stomach had to be removed. Postoperative treatment included regular injections of vitamin B12?

Questions:

1. What is the major chemical in gastric juice secreted by the parietal cells of the stomach? (Hint: It is responsible for stomach pH.) Type answer as chemical formula for this secretion, using proper chemical symbols and capitalization. (1 point)

2. What is the digestive enzyme that is produced by the stomach? Type answer as 2 words, separated by a space and using lowercase letters. (1 point)

3. What macromolecule does the enzyme from question 2 digest? Type answer as 1 word using lowercase letters. (1 point)

4. What is the other chemical produced by the stomach in an inactive precursor that is then activated? (1 point)

5. Name the enzyme from the inactive precursor in #4. Type answer as 1 word using lowercase letters. (1 point)

6. What macromolecule does the enzyme from question 5 digest? Type answer as 1 word using lowercase letters. (1 point)

Answer 1

Answer 1. HCl

Answer 2. pepsin enzyme

Answer 3. break proteins into proteases and peptones.

Answer 4. pepsinogen.

Answer 5. rennin

Answer 6. digest the milk in infants.