精选优质文档-倾情为你奉上Chapter1 Nucleic AcidsI、Choose one correct answer. Mark your answer by circling the capital letter you choose. 1. The direction of nucleic acid isA. From N to C B. From 5 to 3C. From C to N D. From 3 to 5E. None of above2. The description of the secondary structure of DNA double helix are correct, EXCEPTA. Two antiparallel strandsB. Deoxyribose-phosphate frame located outside the strandsC. Two strands are joined by h
