What nutrient is matched with its correct function? o A. fats: main source of energy for the body
O B. carbohydrates: building blocks of hormones and vitamins
OC. proteins: used for growth and repair of the body
O D vitamins: secondary source of energy

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?