In which one of the following is nitrogen not | vedclass

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(C) Nitrogen is a fundamental component of proteins and many pigments. $A$. Invertase is an enzyme (protein),which contains nitrogen. $B$. Pepsin is a

Vedclass · Accepted Answer

Idioblast

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(C) Nitrogen is a fundamental component of proteins and many pigments. $A$. Invertase is an enzyme (protein),which contains nitrogen. $B$. Pepsin is a digestive enzyme (protein),which contains nitrogen. $C$. Idioblasts are specialized plant cells that contain crystals of calcium oxalate (raphides) or other substances; they are not a chemical compound but a cell type,and thus do not have nitrogen as a specific chemical constituent in the context of molecular composition. $D$. Bacteriochlorophyll is a photosynthetic pigment that contains nitrogen in its porphyrin ring structure. Therefore,the correct answer is $C$.

In which one of the following is nitrogen not a constituent?

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