NEET BIOLOGY

Detailed explanation-1: -Nitrogen is a major component of amino acids which are the building blocks of proteins. Amino acids also contain carbon, hydrogen, and oxygen along with nitrogen but nitrogen alone accounts for 16% of the weight of proteins. Nitrogen is also a major component of nucleic acids (DNA and RNA).

Detailed explanation-2: -Nitrogen is an important element in DNA and proteins; however, atmospheric nitrogen is the only source of this element for life on Earth, and it cannot be absorbed by eukaryotes. As a result, nitrogen-fixing bacteria species, such as Rhizobia, live in a mutualistic relationship with plants like legumes.

Detailed explanation-3: -The nitrogen cycle matters because nitrogen is an essential nutrient for sustaining life on Earth. Nitrogen is a core component of amino acids, which are the building blocks of proteins, and of nucleic acids, which are the building blocks of genetic material (RNA and DNA).

Detailed explanation-4: -Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.

Detailed explanation-5: -Nitrogen is a component of amino acids and urea. Amino acids are the building blocks of all proteins. Proteins comprise not only structural components such as muscle, tissue and organs, but also enzymes and hormones essential for the functioning of all living things.