1.

Define the following and give one example of each. 1. Isoelectric point 2. Mutarotation 3. Enzymes

Answer»

1. Isoelectric point: 

It is the pH at which +ve and – ve charges on zwitter ion are equal. Example amino acid exists as zwitter ion at pH = 5.5 to 6.3. 

2. Mutarotation: 

It is a spontaneous change in optical rotation when an optically active substance is dissolved in water. Example α – glucose, when dissolved in water, then its optical rotation changes from 1110 to 52.5°.

3. Enzymes: 

Enzymes are biocatalysts which speeds up the reactions in biosystems. They are highly specific and selective in their action. Chemically all enzymes are proteins.



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