Multiple Choice
A _____ protein lacks or contains inadequate amounts of one or more of the essential amino acids.
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3. Amino Acids
Essential Amino Acids
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Which of the following is a non-essential amino acid for humans?
A
S
B
T
C
K
D
H
Verified step by step guidance1
Understand the concept of essential and non-essential amino acids. Essential amino acids cannot be synthesized by the human body and must be obtained from the diet, whereas non-essential amino acids can be synthesized by the body.
Review the list of essential amino acids for humans. These include: histidine (H), isoleucine, leucine, lysine (K), methionine, phenylalanine, threonine (T), tryptophan, and valine.
Identify the amino acids given in the problem: S (Serine), T (Threonine), K (Lysine), H (Histidine).
Compare the given amino acids with the list of essential amino acids. Threonine (T), Lysine (K), and Histidine (H) are essential amino acids.
Conclude that Serine (S) is not on the list of essential amino acids, indicating that it is a non-essential amino acid for humans.
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