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USA Physics and Chemistry Contests
National Chemistry Olympiad
2013 National Chemistry Olympiad
59
59
Part of
2013 National Chemistry Olympiad
Problems
(1)
2013 USNCO Problem 59: Peptide Functional Group
Source:
4/18/2013
All of the following atoms comprise part of a peptide functional group except:
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A
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Hydrogen
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B
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Nitrogen
<span class='latex-bold'>(A)</span>\ \text{Hydrogen} \qquad<span class='latex-bold'>(B)</span>\ \text{Nitrogen}\qquad
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A
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Hydrogen
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B
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Nitrogen
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C
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Oxygen
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(
D
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Phosphorous
{<span class='latex-bold'>(C)</span>\ \text{Oxygen} \qquad<span class='latex-bold'>(D)</span>}\ \text{Phosphorous} \qquad
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C
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Oxygen
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D
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Phosphorous