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All of the following are roles of protein except:

1. Building block of cells
2. Creates hemoglobin in red blood cells that transports oxygen to body's cells
3. Main energy source
4. Repairs muscles, tendons, and ligaments


Sagot :

Final answer:

Proteins have important roles in the body such as cell building, oxygen transport, and tissue repair.


Explanation:

Proteins play various crucial roles in the human body. Some functions of proteins include being the building blocks of cells, creating hemoglobin for oxygen transport, repairing muscles, tendons, and ligaments, and serving as a source of energy. However, protein is not considered the main energy source, as it primarily functions in other essential roles mentioned above.


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