33. One of the principal methods that organisms use to obtain energy from chemical bonds is by___________. (A) Substitution reactions (B) Debydration reactions (C) Oxidation/reduction reactions (D) Hydration reactions (E) Addition reactions

6. Planarity of the peptide bond means that rotation is allowed about the bond linking ___________the and the carbon of the peptide bond, and also about the bond linking the___________ to the adjacent α-carbon. (A) a-carbon, carbony1 carbon (B) B-carbon, carbonyl carbon (C) carbonyl carbon, nitrogen of the peptide bond (D) a-carbon, nitrogen of the peptide bond (E) none are true

33. One of the principal methods that organisms use to obtain energy from chemical bonds is by___________.
(A) Substitution reactions
(B) Debydration reactions
(C) Oxidation/reduction reactions
(D) Hydration reactions
(E) Addition reactions

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