Which statement best describes the composition and function of proteins in organisms?

Proteins are the building blocks of tissues responsible for building and growth. Proteins are also an important nutrient that supplies different body processes. These are compounds that are composed of chains of amino acids that are crucial in DNA-coding during the processes of cell division. They are considered as the building blocks of life and are in every cell of organisms. Humans depend on protein from food sources, mostly meat and poultry, which are responsible for repair and energy in muscles.