Question

write about the Enzymes​

Answer 1

Explanation:

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Enzymes /ˈɛnzaɪmz/ are both proteins and biological catalysts (biocatalysts). Catalysts accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. Almost all metabolic processes in the cell need enzyme catalysis in order to occur at rates fast enough to sustain life.[1]:8.1 Metabolic pathways depend upon enzymes to catalyze individual steps. The study of enzymes is called enzymology and a new field of pseudoenzyme analysis has recently grown up, recognising that during evolution, some enzymes have lost the ability to carry out biological catalysis, which is often reflected in their amino acid sequences and unusual 'pseudocatalytic' properties

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Answer 2

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A very large number of chemical reactions take place in our bodies. These are brought about at the physiological pH of 7.4 and the body temperature of 370 C with the help of biological catalysts called enzymes. For example : insulin, an enzyme secreted by pancreas, controls blood sugar level; amylase, an enzyme present in saliva, hydrolyzes starch.

Chemically enzymes are proteins. Every living cell contains at least 1000 different enzymes. Most enzymes catalyse only one reaction or one group of similar reactions. Thus, enzyme catalysis is highly specific. You have learnt that a mineral acid can catalyse hydrolysis of many types of compounds such as esters, acetals and amides.In contrast, an enzyme that catalyses hydrolysis of amide will not work on ester or acetal.