Multiple Choice
Which of the following statements is true of essential amino acids?
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3. Amino Acids
Essential Amino Acids
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Which of the following is a nonessential amino acid?
A
Valine
B
Leucine
C
Lysine
D
Alanine
Verified step by step guidance1
Understand the distinction between essential and nonessential amino acids. Essential amino acids cannot be synthesized by the human body and must be obtained through the diet, while nonessential amino acids can be synthesized by the body.
Review the list of essential amino acids. These include: Valine, Leucine, Isoleucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan, and Histidine.
Compare the given options (Valine, Leucine, Lysine, and Alanine) with the list of essential amino acids. Identify which ones are essential.
Recognize that Valine, Leucine, and Lysine are all essential amino acids, as they are part of the list of essential amino acids.
Conclude that Alanine is a nonessential amino acid because it is not part of the essential amino acid list and can be synthesized by the human body.
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