Item BF129001: The circulatory system carries amino acids from the digestive tract to cells of both the brain and the skin.

Which of the following statements is TRUE about amino acids getting from the digestive tract to cells of the brain and the cells of the skin?

  1. The circulatory system carries amino acids to cells of both the brain and the skin.
  2. The circulatory system carries amino acids to cells of the brain but not to cells of the skin.
  3. Amino acids get to cells of both the brain and the skin, but these molecules are not carried by the circulatory system.
  4. Amino acids do not get to cells of the brain or the skin.

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