HCI or hydrochloric acid helps to lower down the Ph value of stomach and thus activates Pepsin, which is an enzyme present in most juices, and helps to break proteins into smaller peptides.
What substance must be present in the stomach for pepsin to work best? *
The optimum pH of pepsin is pH2. Pepsin is found in the stomach and it is protease enzyme that digest protein into smaller molecule. The stomach is suitable place for it because it is acidic , so it's activity increases in the acidic environment.
Pepsin in the stomach
Pepsin works best in acidic environments and it's optimal pH (the pH at which it works best) is 2.0
Yes. The precursor of pepsin is called pepsinogen; it is produced by stomach cells and then activated by the HCl in the stomach. Pepsin works best at very low pH.... e.g. acid conditions of the stomach. The small intestine has glands that produce neutralize the acid. Pepsin denatures at pH's of 5,0 or higher..... so effectively it is neutralized when the chyme enters the small intestine.
It denatures (enzyme breaks down) because pepsin is best operational in a pH of around 2 or 3 in the stomach juices.
These are secreted by the stomach:pepsiogen precursor for pepsin (an enzyme)intrinsic factor (so that B12 can be absorbed)gastrin (a hormone)ghrelin (a hormone)Only pepsin fits your question as pepsiogen needs HCl to convert into pepsin.Pepsin.
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. It is located in the stomach. Pepsin helps with the breakdown of food and is a protein. A pH 2 is optimal for the human enzyme pepsin. If the pH level exceeds 7, pepsin becomes denatured or lose its structure; above pH 5,, it will increase function.
Pepsin is found in the stomach of a human being. It turns food proteins into peptides and is considered a digestive protease.
Pepsin secreted in the stomach, works at highly acidic pH and the pH could be as low as 2. The optimal pH for pepsin is thus near about 2. This pH is maintained by HCl secreted by the gastric glands in the stomach.
A person's inability to produce hydrochloric acid in the stomach is called achlorhydria. This condition affects the enzyme pepsin, which helps to break down proteins. Pepsin requires a low pH to be activated.