DNA- The Genetic Material
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Double helix | the shape of the DNA molecule (Watson and Crick)
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| Nucleotide | a piece of the DNA molecule, made of a phosphate, a sugar and a base
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| Base- pairing rules | A pairs with T (2 bonds) and G pairs with C (3 bonds)
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| Complementary base pair | the sequence of bases on one strand, or side, determines the sequence of the bases on the other strand, or side
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| Purines | 2, or double, ring bases (A and G)
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| Pyrimidines | 1, or single, ring bases (T and C)
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| Adenine (A) | always pairs with T, 2 bonds
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| Thymine (T) | always pairs with A, 2 bonds
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| Cytosine (C) | always pairs with G, 3 bonds
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| Guanine (G) | always pairs with C, 3 bonds
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| DNA replication | making a copy of DNA so the cell can reproduce, during Synthesis phase
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| DNA helicase | the chemical that opens the double helix by breaking the bonds between the bases on the opposite strands
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| replication fork | the areas where the double helix separates
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| DNA polymerase | the chemical that moves along the DNA strands and adds nucleotides according to the base-pairing rules
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Created by:
jyoung271
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