Answer:
The Stroma of the chloroplast.
Explanation:
This answer is correct
U don’t even have a food pyramid picture to go off of
Pepsinogen, an inactive zymogen, is secreted into gastric juice from both mucous cells and chief cells. Once secreted, pepsinogen is activated by stomach acid into the active protease pepsin, which is largely responsible for the stomach's ability to initiate digestion of proteins.
