Can someone please tell me which ones I am getting wrong? (my answers in parentheses) 
 Read the statements and decide if it applies to RNA, DNA, or both:
 1. Has both purines & pyrimidine (Both)
 2. Contains Ribose (RNA)
 3. Has negatively charged phosphate groups (Both)
 4. Contains hydrogen bonds between nitrogen bases (DNA)
 5. The monomer is a nucleotide (DNA)
 6. Composed of CHONP (? Both)
 7. Contain the Uracil nitrogen base (RNA)