Question

Hydrolytic enzymes which act on low pH are called as-
(a)Protease
(b)$\alpha$-Amylase
(c)Hydrolases
(d)Peroxidase

Answer 1

Hint: A hydrolytic enzyme is an enzyme that catalyzes the hydrolysis of a bond. These enzymes usually have a decent specificity like Esterase which catalyzes the breakdown of all ester bonds, due to their levels being highly moderated in cells.

Complete answer:
Hydrolytic enzymes that work on low pH are known as protease enzymes. Protease enzymes catalyze the breakdown of proteins to smaller amino acids or polypeptides. They undergo proteolysis by hydrolyzing peptide bonds. Proteases are found altogether in living organisms, e.g. bacteria, algae, plants and animals, and in a number of viruses too. They’re involved within catabolism and digestion of proteins and also in cell signaling. They’re proteolytic, they assist in the digestion and catabolism of proteins. They catalyze the hydrolysis of peptide bonds and change them to amino acids, which is then soaked up and used by cells

Additional Information: There are many various sorts of proteases, which participate in various biochemical processes.
On the idea of the location of the peptide linkage cleavage, proteolytic enzymes are divided into two broad groups-
Exopeptidase: They catalyze the cleavage on terminal peptide linkage, e.g. aminopeptidases, carboxypeptidases, etc.
Endopeptidase: They smooth the cleavage of the internal peptide link of proteins such as pepsin, trypsin, chymotrypsin, elastase, etc.
Oligopeptidase refers to enzymes that act on a selected peptide linkage.
Amylase is a starch (carbohydrate) digesting enzyme and carbohydrate digestion doesn't occur within the stomach. All digestive enzymes are hydrolases. Peroxidase is an iron-containing enzyme, mostly present in plants but also found in leukocytes and milk, that catalyzes the oxidation of various substances within the presence of peroxide. Hydrolases are hydrolytic enzymes, which catalyze the hydrolysis reaction by including water to break the bond and hydrolyze it.
So, the correct answer is ‘Protease’.

Note: Dietary protein is digested by many protease enzymes present within the alimentary canal. Pepsin presents within the digestive juice as pepsinogen, which in presence of HCl, gets converted into pepsin. Pepsin partially hydrolyzed proteins into proteases and peptones. Digestive juice of infants contains renin, which hydrolyses milk protein. The partially digested proteins are acted on by pancreatic enzymes within the intestine.