| A | B |
|---|
| proteins | hold the shape of DNA together |
| double helix | the shape of DNA |
| chromosomes | are found in the nucleus |
| bases | A, G, T, C |
| A pairs with | T |
| T pairs with | A |
| G pairs with | C |
| C pairs with | G |
| complementary base pairs | match up |
| bases are | held together by H bonds |
| if a base sequence is GGTAC the complementary base pairing on the other strand is | CCATG |
| if a base sequence is GGATC the complementary base pairing on the other strand is | CCTAG |
| if a base sequence is GGTCA the complementary base pairing on the other strand is | CCAGT |
| if a base sequence is GCTAC the complementary base pairing on the other strand is | CGATG |
| 3 H bonds between | C and G |
| 2 H bonds between | A and T |
| the order of bases in a gene | codes for a protein |
| when trying to extract DNA, the function of detergent is to | break down cell surface membranes |
| when trying to extract DNA, the function of salt is to | make DNA clump together |
| when trying to extract DNA, the function of protease is to | break down proteins |
| DNA is insoluble in ethanol | so it forms a precipitate |
| chromatography is used to | separate pieces of DNA |
