Across
- 5. Rosalind ______________________, a young biophysicist in London almost 100 years after DNA was discovered, was likely the first to confirm the helical structure of DNA.
- 6. The fourth major group of biological molecules
- 10. The sugar in RNA is __________________, which has one more atom than deoxyribose.
- 11. The word that starts with A and is one of the four nitrogen bases.
- 14. The word that starts with C and is one of the four nitrogen bases.
- 15. A 5-carbon ______________ molecule that is part of a nucleotide.
- 17. RNA is a ______________________-stranded molecule, unlike DNA.
- 19. The enzyme that helps building the beginning of the new DNA strand is called RNA _____________________.
- 20. DNA was discovered in 1869 by a Swiss biologist named Friedrich _________________.
- 21. The word that starts with T and is one of the four nitrogen bases.
- 23. These bonded nitrogenous bases are called _____________ pairs.
- 24. Made up of many small, repeating molecular units.
- 25. Deoxyribonucleic acid.
Down
- 1. Every cell in your body will copy itself ____________________ of times during the course of your life.
- 2. Each of your ___________________ cells has 46 DNA molecules tightly packed into its nucleus.
- 3. RNA
- 4. The largest of all our chromosomes contains a single molecule with 247 ____________________ base pairs.
- 6. One of four _____________ bases that are part of a nucleotide.
- 7. The order of the four nucleobases, or the Base __________________________ is what allows your DNA to “create” you.
- 8. The small units within DNA.
- 9. A ______________ group that is part of a nucleotide.
- 12. Another name for the DNA molecule and looks like a twisted ladder.
- 13. The word that starts with G and is one of the four nitrogen bases.
- 16. The fourth nucleotide in RNA (which replaces thymine).
- 18. In DNA, the sugars and phosphates bond together to form twin __________.
- 22. The two long chains are linked by the nitrogenous bases via relatively weak ______________________ bonds.