National and Regional Contests USA Contests USA Physics and Chemistry Contests National Chemistry Olympiad 2004 National Chemistry Olympiad 60 2004 USNCO Problem 60: Enzymes Problem Statement Most enzymes are a type of< s p a n c l a s s = ′ l a t e x − b o l d ′ > ( A ) < / s p a n > Carbohydrate < s p a n c l a s s = ′ l a t e x − b o l d ′ > ( B ) < / s p a n > Lipid < s p a n c l a s s = ′ l a t e x − b o l d ′ > ( C ) < / s p a n > Nucleic Acid < s p a n c l a s s = ′ l a t e x − b o l d ′ > ( D ) < / s p a n > Protein <span class='latex-bold'>(A) </span> \text{Carbohydrate} \qquad<span class='latex-bold'>(B) </span> \text{Lipid} \qquad<span class='latex-bold'>(C) </span> \text{Nucleic Acid} \qquad<span class='latex-bold'>(D) </span> \text{Protein} \qquad < s p an c l a ss = ′ l a t e x − b o l d ′ > ( A ) < / s p an > Carbohydrate < s p an c l a ss = ′ l a t e x − b o l d ′ > ( B ) < / s p an > Lipid < s p an c l a ss = ′ l a t e x − b o l d ′ > ( C ) < / s p an > Nucleic Acid < s p an c l a ss = ′ l a t e x − b o l d ′ > ( D ) < / s p an > Protein