Across
- 4. A unit of length in the metric system equal to one billionth of a meter
- 5. A submicroscopic infectious agent that replicates only inside the living cells of an organism.
- 8. A virus which attacks the nose, throat, and lungs.
- 9. Can temporarily integrate DNA into host cells, often used in gene therapy research.
- 10. A chemical which works together to form muscles, skin, organs, and enzymes.
Down
- 1. A virus which affects the respiratory system.
- 2. Segments of DNA that carry instructions for building a specific protein.
- 3. Viral DNA which can enter liver cells and sometimes contribute to liver cancer.
- 6. A trait which can be determined by DNA.
- 7. It is a double helix structure, like a twisted ladder, with a rungs made of four chemical bases.