Question

What are enzymes? Name any one enzyme of our digestive system and write its function.

Answer 1

A digestive enzyme is an enzyme that breaks down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body. Digestive enzymes are found in the digestive tracts of animals (including humans) and in the traps of carnivorous plants, where they aid in the digestion of food, as well as inside cells, especially in their lysosomes, where they function to maintain cellular survival. Digestive enzymes of diverse specificities and are found in the saliva secreted by the salivary glands, in the secretions of cells lining the stomach, in the pancreatic juice secreted by pancreatic exocrine cells, and in the secretions of cells lining the small and large intestines.

Digestive enzymes are classified based on their target substrates:

Proteases and peptidases split proteins into small peptides and amino acids.Lipases split fat into three fatty acids and a glycerol molecule.Amylases split carbohydrates such as starch and sugars into simple sugars such as glucose.Nucleases split nucleic acids into nucleotides.

In the human digestive system, the main sites of digestion are the oral cavity, the stomach, and the small intestine. Digestive enzymes are secreted by different exocrine glands including:

Salivary glandsSecretory cells in the stomachSecretory cells in the pancreasSecretory glands in the small intestine

Answer 2

hey dear...!!

Enzymes are biological catalyst that increase the rate of chemical reactions without being used up .Enzymes are also proteins that are folded into complex shape that allow smaller molecules to fit into them.
Amylases split carbohydrates such as starch and sugars into simple sugar such as glucose..

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