All of the following statements apply to proteins except
- AProteins generally have no definite melting point
- BProteins contain the grouping $-CONH-$
- CProteins have high molecular weight
- DProteins can only contain the elements $C, H, O$ and $N$.
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Which of the following is manufactured from molecular nitrogen by bacteria?
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Reason : At isoelectric point,amino acid exists as a zwitterion.
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