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BI Lab 9
| Term | Definition |
|---|---|
| nucleotides | each DNA molecule is composed of these subunits |
| nitrogenous base, deoxyribose, and phosphate group | three parts that make up the nucleotide |
| nitrogenous base | adenine, thymine, guanine, and cytosine |
| deoxyribose | five-carbon sugar |
| hydrogen bonds | hold together two nucleotide strands in a spiral double helix |
| complementary base pairing | inside the double helix, the bases always pair in a specific order: adenine with thymine and guanine with cytosine |
| replication | duplication of the molecule |
| antiparallel nature | nature of the double-stranded DNA molecule in which opposite ends of the molecule have phosphate bonds |
| filtrate | liquid mixture that flows through something like cheesecloth |
| interface | layer between filtrate and ethanol |
| precipitating | becoming solid and visible in a solution |