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Q.
The fastest acting enzyme, in the biological kingdom, is
AMUAMU 2005
Solution:
Carbonic anhydrase is the fastest acting enzyme. Most of the carbon dioxide that dissolved in blood plasma reacts with water to form carbonic acid. This reactioin occurs very rapidly inside RBC due to presence of enzyme carbonic anhydrase.
$ CO_{2}+H_{2}O\xrightarrow[\text{Anhydrase}]{\text{Carbonic}}H_{2}CO_{3} $
$ \rightleftharpoons H^{+}+HCO_{3}^{-} $
lipase is an enzyme secreted by pancreas that catalyses the breakdown of fats into fatty acids and glycerol in the small intestine.
Amylase is a group of closely related enzymes that degrade starch, glycogen and other polysaccharides. They are of two types $\alpha$ and $\beta$ . In animals, only $\alpha$ -amylase is present in pancreatic juice and also in saliva. They cleave the glycosidic bonds of the long polysaccharide chains producing a mixture of glucose and maltose.
Peptidase is an enzyme that catalyses the hydrolysis of protein into smaller peptide protein and amino acids, eg, pepsin and trypsin.