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HH 1.2 Structure and replication of DNA
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DNA
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deoxyribonucleic acid; molecule that holds the genetic code in organisms
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Terms in this set (25)
DNA
deoxyribonucleic acid; molecule that holds the genetic code in organisms
double helix
three-dimensional shape of a DNA molecule
nucleotides
subunit of DNA consisting of deoxyribose sugar, phosphate group and a base
deoxyribose sugar
pentose sugar that is a component of DNA molecules
phosphate
component of DNA molecule (makes the backbone along with sugar)
base
nitrogenous substance that is a component of DNA
Adenine (A)
base that pairs with thymine
Thymine (T)
base that pairs with adenine
Guanine (G)
base that pairs with cytosine
Cytosine (C)
base that pairs with guanine
sugar phosphate backbone
strongly bonded strand of DNA
3'-5'
strand of nucleic acid running from a sugar to a phosphate
hydrogen bonds
weak chemical link joining complementary base pairs in DNA
antiparallel
parallel strands in DNA that run in opposite directions
replication
formation of copies of DNA molecules