| A | B |
|---|
| double helix | spiral staircase structure characteristic of the DNA |
| nucleotide | subunits that make up DNA: sugar, phosphate & nitrogen base |
| deoxyribose | 5-carbon sugar;component of DNA nucleotides |
| base-pairing rules | rules stating nitrogen pairing |
| complementary base pair | sequence of bases in one strand is paired to the sequence of bases on the other |
| DNA replication | process of making copy of DNA |
| DNA helicase | enzyme that unwinds the DNA double helix during DNA replication |
| replication fork | Y-shaped point that results when 2 strands of a DNA double helix separate so that the DNA molecule can be replicated |
| DNA polymerase | enzyme that catalyzes the formation of DNA molecule |
