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chapter 4 dna
| Question | Answer |
|---|---|
| Nitrogen bases | molecules that contain nitrogen and other elements |
| DNA replication | the process when DNA copies its self |
| Messenger RNA | Copies the message from DNA in nucleus and carries the message to the ribosome in the cytoplasm |
| transfer RNA | carries amino acid to the ribosome from the cytoplasm |
| Mutation | any change in the DNA of a gene or chromosome |
| Cancer | is a disease in which cells grow and divide uncontrollably |
| tumor | a mass of abnormal cells that develops when cells divide and grow uncontrollably |
| chemotherapy | is a drug to treat a disease |