Amino acids are nitrogen-containing building blocks of protein. (True or false?)

Amino acids are nitrogen-containing building blocks of protein.
 
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The mentally ill are 10 times more likely to commit a violent crime than those who are not mentally ill.
 
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Carbohydrates contain more calories per gram than fats.
 
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Although you may be concerned about a loved one's depression, you should avoid asking directly if they're considering suicide.
 
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Vitamins are essential organic compounds.
 
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