Question

it is _ essential source of protein article​

Answer 1

Answer:

It is an essential source of protein.

Answer 2

Answer:

it is _the_ essential source of protein article.

Explanation:

Protein is a macronutrient. It is one of the three nutrients found in food that the body needs in large amounts. It is essential for the maintenance and building of body tissues and muscle.

Proteins are made of small compounds called amino acids. Hundreds of amino acids exist in nature, but the human body only uses 22 of them.

The body can produce all but nine of the amino acids it needs. These nine are called essential amino acids. They must come from food.