Multiple Choice
Which of the following foods contain all nine essential amino acids?
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3. Amino Acids
Essential Amino Acids
Multiple Choice
Which food is the best example of an incomplete protein source (i.e., lacking one or more essential amino acids in sufficient amounts)?
A
White rice
B
Eggs
C
Chicken breast
D
Cow's milk
Verified step by step guidance1
Understand the concept of complete and incomplete proteins: Complete proteins contain all essential amino acids in sufficient amounts, while incomplete proteins lack one or more essential amino acids.
Recall that animal-based foods such as eggs, chicken breast, and cow's milk are generally considered complete protein sources because they provide all essential amino acids.
Recognize that many plant-based foods, including white rice, are often incomplete proteins because they lack sufficient amounts of one or more essential amino acids.
Identify white rice as an example of an incomplete protein source because it does not contain all essential amino acids in adequate amounts.
Conclude that among the options given, white rice is the best example of an incomplete protein source.
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