Download Molecuar Structure of DNA Questions

Biology
Molecular Structure of DNA
1. What are the three parts of a DNA nucleotide?
2. What two parts of the DNA nucleotide make up the “backbone” of the
macromolecule?
3. If compared to the structure of a ladder, which part of the DNA molecule would
be considered the rungs?
4. Where does hydrogen boning occur in a DNA molecule?
5. How many DNA nucleotides are there? List them. Also indicate which are
purines, and which are pyrimidines.
6. Compare the ring structure of purines and pyrimidines.
7. Adenine hydrogen bonds with what nucleotide?
8. Guanine hydrogen bonds with what nucleotide?
9. What is the proper way to indicate the orientation of the sugar molecules in the
DNA backbone?
10. how many hydrogen bonds are between adenine and thymine? Guanine and
cytosine?