Download Name Bozeman – What is DNA? http://backpack.tv/video/biology

Name __________________________
Bozeman – What is DNA?
http://backpack.tv/video/biology/bozeman-science/paul-andersen/what-dna
Use the following website to watch the video entitled “What is DNA?” and answer the questions.
1. Identify the building blocks of DNA?
2. Complete the following chart:
Nitrogenous bases
Purines=
Pyrimidines=
Sugar
In DNA?
In RNA?
Phosphate group
Describe it….
3. What does it mean to say DNA is antiparallel?
4. To what end of DNA do new nucleotides get added?
5. DNA can be described as a ladder. What makes up the backbone? What makes up the rungs of
the ladder?
6. Which nitrogenous bases pair together? What kind of bonds hold them together?
7. How many nitrogenous bases code for an amino acid?
8. Where does the name deoxyribonucleic acid come from?
9. What came first, RNA or DNA? Why might that make sense?
10. What are the advantages of DNA over RNA?