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Structure of DNA monomer
phosphate group
deoxyribose sugar (pentose)
base: Adenine, thymine, cytosine, guanine.
structure of RNA monomer
phosphate group
ribose sugar (pentose)
bases: adenine uracil guanine cytosine
Pyrimidine and purines
Pyrimidines: Cytosine and Thymine (1 ring)
Purines: Adenine and guanine (2 rings)
What bonds form between nucleotides and between bases?
Between bases: Hydrogen bonds.
A+T= 2. C+G=3
Between nucleotides: phosphodiester bonds and broken by condensation reactions.