Nitrogen is an essential constituent of all : A. Fats B. Proteins C. Vitamins D. Carbohydrates

The correct answer is: B. Proteins

Nitrogen is an essential constituent of proteins. It is found in the amino acids that make up proteins. Proteins are essential for the growth and repair of tissues, the production of enzymes and hormones, and the transport of oxygen and nutrients in the blood.

Fats are also essential for the body, but they do not contain nitrogen. Fats are a source of energy and help to protect the body’s organs. They also help to absorb vitamins A, D, E, and K.

Vitamins are also essential for the body, but they do not contain nitrogen. Vitamins are

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