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.
The function of the digestive system is to break down these large molecules (called polypeptides) into smaller molecules (called amino acids). Pepsin in your stomach is an enzyme that chemically breaks down (hydrolyses) many protein molecules into less complex, smaller chains of amino acids.The stomach does not break down all proteins completely into amino acids.The digestion of protein is completed by the enzymes in the small intestine by another enzyme called trypsin. The relatively small molecules of amino acids enter the bloodstream in the small intestine.he stomach does not break down all proteins completely into amino acids. The digestion of protein is completed by the enzymes in the small intestine by another enzyme called trypsin. The relatively small molecules of amino acids enter the bloodstream in the small intestine.