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6. The bonds of the sugar phosphate backbone of DNA are called
- Phosphodisaccharide
- Phosphodiester
- Phosphotriester
7. The energy of base stacking provides DNA with much of its chemical stability
8. G DNA has how many strands?
9. The B strand of DNA is not antiparrallel
10. Pyrimidine (single) bases are
11. In each chain of B form DNA, there is a complete turn every ______
12. Purine bases (double) are
13. The water bonding to the bases is what gives the DNA its chemical stabiility
14. Bases with a double ring structure are
15. Depending on conditions, DNA can form more than ___ slightly different variants of right handed helices
16. A DNA is similar to ____ DNA, although it has slightly more compact helices
17. The grooves on the outside of the DNA are not symmetrical, thus they are named the major and minor grooves
18. The first essentially correct structure of DNA was proposed in 1953 by
- James Watson and Francis Crick
- Avery, McLeod and McCarty
19. The bases stack closely to exclude the maximum amount of water possible (they're hydrophobic) this is known as
- Base stacking
- Base packing
20. From Chargraff's rules: the amount of adenine equals that of _________
