Why amino acids are essential?

Which of the following is NOT true about non-essential amino acids?

  • A. Non-essential amino acids can be used to make essential amino acids thru transamination. B. Non-essential amino acids can be made from their alpha-keto acids. C. Non-essential amino acids all contain an amine group and an acid group. D. Non-essential amino acids are an essential part of body protein.

  • Answer:

    A is false. Non-essential amino acids cannot be converted to essential amino acids. Essential amino acids must be ingested into the body via some nutritional source.

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