Nitrogen is a key element in the formation of what, which are substances necessary to living organism?

Answer 1

Nitrogen is a key element in both the formation of proteins and the DNA and RNA necessary for life.

Proteins are made of amino acids, which have both a nitrogen group #(NH_2#) and an acid group #(CO_2H)#. Without nitrogen, amino acids and proteins cannot be formed. Proteins are essential for life.

Nucleic bases, which make up DNA and RNA, contain nitrogen. Without nitrogen, it would be impossible to write the genetic code required for life.

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Answer 2

Owen Ambrose

Proteins are substances that are essential to living things, and nitrogen plays a major role in their formation.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.