20. When the carbon skeleton of an amino acid is oxidized for energy, the amino group is removed and sent to the liver to produce (A) ammonia. (B) protein. (C) urea. (D) albumin.

3. If a total of 2000 kcal were consumed (250 grams of carbohydrates, 66 grams of fat, and 102 grams of protein), what percentage of energy comes from carbohydrates, fat, and protein? (A) 30% carbohydrate, 50% fat, and 20% protein (B) 50% carbohydrate, 35% fat, and 15% protein (C) 20% carbohydrate, 30% fat, and 50% protein (D) 50% carbohydrate, 30% fat, and 20% protein

20. When the carbon skeleton of an amino acid is oxidized for energy, the amino group is removed and sent to the liver to produce
(A) ammonia.
(B) protein.
(C) urea.
(D) albumin.

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