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biology_voc_ch9
| Question | Answer |
|---|---|
| A substance that is prepared from killed or disease-causing agents, including certain bacteria | Vaccine |
| Able to cause disease | Virulent |
| A change in genotypecaused when cells take up foreign genetic material | Transformation |
| A virus that infects bacteria | Bacteriophage |
| Two strands around each other, like a winding staircase | Double helix |
| Subunits that make up DNA | Nucleotide |
| Five-carbon sugar in DNA nucleotides | Deoxyribose |
| The rules stating that cytosine pairs with guanine and adenine pairs with thymine in DNA, and that adenine pairs with uracil in RNA | Base-pairing rules |
| A characteristic of nucleic acids in which the sequence of bases on one strand is paired to the sequence of bases on the other | Complementary base pair |
| The process of making a copy of DNA | DNA replication |
| DNA enzymes that open the double helix by breaking the hydrogen bonds that link complementary nitrogen bases between the two strands | DNA helicase |
| Areas where the double helix seperates | Replication fork |
| An enzyme that catalyzes the formation of the DNA molecule | DNA polymerase |