biology

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Author:
xodorkydancerox
ID:
9515
Filename:
biology
Updated:
2010-03-07 19:10:53
Tags:
section 2
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Description:
dna structure
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  1. nucleotide
    subunit of nucleic acid, three parts: five carbon sugar, phosphate group, nitrogenous base
  2. deoxyribose
    five carbon sugar in dna nucleotide
  3. nitrogenous base
    conatins nitrogen and carbon atoms and is a base (accepts hydrogen ions
  4. what kind of bonds exist between the nitrogenous bases of each side of the helix?
    hydrogen (base pairing comes into play)
  5. purine
    nitrogenous bases that have a double ring of carbon and nitrogen atoms ie adenine and guanine
  6. pyrimidine
    nitrogenous bases witha single ring of carbon and nitrogen atoms ie cytosine and thymine
  7. base pairing
    bases pair in a pattern, discovered by observations by chargaff
  8. complementary base paring
    base pairs, adenine/thymine, cytosine/guanine
  9. base sequence
    the order of nitrogenous bases in a chain of dna

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