| A | B |
|---|
| vaccine | substance that is prepared from killed or weakened disease causing agents, including bacteria |
| virulent | able to cause disease thats highly infectious |
| transformation | change in genotype caused when cells take up foreign genetic material |
| bacteriophage | a virus that infects bacteria |
| double helix | the spiral staircase structure characteristic of the DNA molecule |
| nucleotide | sub units that make up DNA |
| deoxyribose | a five carbon sugar that is a component of DNA nucleotides |
| base-pairing rules | the rules stating that cytosine pairs with guanine and adenine pairs with thymine in DNA, and that adenine pairs with uracil in RNA |
| complementary base pair | a characteristic of nucleic acids in with the sequence of bases on one strand is paired to the sequence of the bases on the other |
| DNA replication | the process of making a copy of DNA |
| DNS helicase | an enzyme that unwinds the DNA double helix during DNA replication |
| replication fork | the ares where the double helix separates |
| DNA Polymerase | an enzyme that catalyzes the formation of the DNA molecule |
