複選題32. Which of following statement(s) for nucleic acid is/are True: (A) C, T are Purines (B) There are two hydrogen bonds between CG pairing (C) During the process of free nucleotides becoming RNA, every single nucleotide added, two phosphate groups are released. (D) The higher the GC content, the lower the Tm value is. (E) RNA at neutral pH buffer (pH=7) has no charge