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Purines
2 rings (A and G)
Pyrimidines
1 ring (T, U, and C)
Difference between RNA and DNA
DNA has H on 2’ carbon and RNA has OH on 2’ carbon
Type of bond between DNA
Covalent bonding/ phosphodiester bond
Nucleotides are
Complimentary
Charge of DNA and why
Negative because of phosphate group which sticks outside of the helix where sugar is in the middle
important for electrophoresis
Sugar that makes up nucleic acid
pentose
What direction are the carbons numbered
clockwise
The helix strands run
antiparallel
Note 
Flashcard (25)