Serving..if that is not the answer, portion is :)
Explanation:
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<span>Proteins: help develop muscle tissue and function. Protein is necessary to make the hair, skin, nails, muscles, organs, blood cells, nerve, bone and brain tissue, enzymes, hormones and antibodies.
</span><span><span>Protein builds new cells and fixed damaged ones in all parts of your body<span>.</span></span>
Vitamins: are important for metabolism and for our bodies working properly.
minerals:
bodily functions.
Carbohydrates for energy
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DNA helps scientists to better classify organisms is because each organ has a specific kind of DNA. For an example, brains and hearts have many small types of RNA. So if a scientists see some RNA they know that its a heart or a brain.
