| A | B |
| The sugar in DNA | Deoxyribose |
| The prefix monomer means | one |
This is a,  | polymer |
| The prefix poly means | many |
| He found that the amount of adenie is the same as thymine and cytosine is the same as guanine | Chargaff |
| The protein that coils up chromosomes | histones |
| Coiled up chromosomes or DNA | chromatin |
| These are pyrimidines | Cytosine and thymine |
| These are purines | Adenine and guanine |
| Adenine always pairs with | Thymaine |
| Cytosine always pairs with | Guanine |
| DNA has a backbone made of a | sugar phosphate |
| The two sugar back bones are joined by | nitrogeneous bases |
| Which is smaller,DNA, Chromosomes or Genes? | Genes |
| Where DNA is found? | the nucleus |