The enzyme that acts upon the substrate pepsin is also called pepsin. Pepsin is a digestive enzyme produced in the stomach that helps break down proteins into smaller peptides.
The stomach consists of gastric gland that secrete gastric juices- HCl ,Renin and Pepsin. Pepsin acts upon proteins to convert them to peptides, smaller protein molecules. But, Hcl is needed for conversion of proteins as pepsin works best in aan acidic medium.
pepsin, trypsin, chymotrypsin, carboxypeptidase, aminopeptidase
It moves to the small intestines where nutrients are absorbed.
Food reaches the stomach through the oesophagus after it is ingested. It enters the stomach throught the cardiac sphincter, a band of circular muscles that allow the entrance of food substances into the stomach. the food in the stomach is then acted upon by the gastric gland present in the stomach that secrete gastric juices- HCl, renin and Pepsin. Pepsin acts on the proteins present in the food to convert them into smaller molecules called peptides. This action of pepsin requires the presence of Hcl acid as pepsin works better in an acidic medium. In this way, food is broken down. Moreover, the stomach in the mean time performs peristalsis, the rhythmic contraction and relaxation of muscles. This also results in breaking down of food.
impulse
it is acted upon
Force
Unless an object at rest is acted upon by a force, it stays at rest due to its inertia.
A substrate is the substance acted upon by an enzyme. The enzyme substrate complex is when an enzyme molecule combines with its substrates.
I acted in the drama session
Objects in motion tend to stay in motion unless acted upon by an outside force. Objects at rest tend to stay at rest unless acted upon by an outside force.