Which of the following are organic compounds formed from amino acids that are essential for building and repairing body tissue?

The correct choice highlights proteins as organic compounds composed of amino acids, which play a crucial role in building and repairing body tissues. Proteins are essential macromolecules that perform a wide range of functions in the body, including serving as structural components of cells, enzymes that catalyze biochemical reactions, and antibodies that help defend against pathogens.

Proteins are made up of long chains of amino acids, and the specific sequence of these amino acids determines the structure and function of each protein. The body utilizes proteins for growth, repair, and maintenance of tissues, making them vital nutrients for overall health.

In contrast, carbohydrates are primarily used as a source of energy rather than for tissue repair. Fats, while important for energy storage and other functions, are not made from amino acids and do not serve the same structural purposes as proteins. Vitamins, although necessary for various biochemical pathways and maintaining health, do not come from amino acids and do not have the same role in tissue repair. Thus, proteins specifically fulfill the requirement for organic compounds essential for building and repairing body tissue.