Which of the following macromolecules contain nitrogen?

Proteins contains nitrogen. They are large biological molecules or macromolecules, consisting of one or more long chains of amino acids (organic compounds composed of amine (−NH2) and carboxylic acid(−COOH)).

Proteins contains nitrogen. They are large biological molecules or macromolecules, consisting of one or more long chains of amino acids (organic compounds composed of amine (−NH2) and carboxylic acid(−COOH)).

Explanation:

Hope it will help you

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."