It is the form of energy produced in the mitochondria and is the cell's engine responsible for all cell. function. b. It is the form of energy produced in the endoplasmic reticulum and is the cell's engine responsible for. all cell function.
Pepsinâs main function is to break down proteins that are found in protein rich foods such as meat, eggs etc. It breaks them into smaller pieces called polypeptides. Interesting thing about pepsin is that it breaks proteins only at certain points so that the protein is not digested completely to the amino acid level.epsinogen is a pro-form zymogen of pepsin. It is released in the stomach by its chief cells. This zymogen is activated by hydrochloric acid released from parietal cells in the stomach linings.
Instructions. 1  Pepsin Pepsin is âan inactive form of pepsinogen that is produced in the stomachâ. 2  It activates only during the digestion process and breaks down the proteins in the food into components like peptones, proteoses and polypeptides.nlike pepsin, pepsinogen can be converted to pepsin by hydrochloric acid (HCL). Pepsinogenâs secretion is stimulated by histamine, vagal stimulation and gastrin, whereas the same is not the case with pepsin. Moreover, pepsinogen is constant in both alkaline and natural solutions, while pepsin is not.