11. The structural feature that allows DNA to replicate is the
12. What name is given to the reactants in an enzymatically catalyzed reaction?
13. Which of the following are nitrogenous bases of the purine type?
14. Which of the following are nitrogenous bases of the pyrimidine type?
15. Which of the following describe(s) some aspect of metabolism?
16. Which of these is a difference between DNA and RNA?
17. Which organic molecule below is most closely related to lipids?
18. Which organic molecule below is most closely related to nucleic acids?
19. Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?
20. Without enzymes, the chemical reactions in the body would
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