DNA structure worksheet – Flashcards
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What do the letters DNA stand for
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Deoxyribonucleic acid
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What are the names of the two scientists credited for discovering the structure of DNA?
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James Watson
Francis Crick
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What are the monomers in DNA called
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Nucleotides
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What are the 'backbone' of the DNA molecule?
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Sugar (deoxyribose)
Phosphates (phosphodiester bonds)
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What are the name of the 4 different monomer bases in the DNA
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Thymine (T)
Adenine (A)
Guanine (G)
Cytosine (C)
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These bases are of two different types of molecules: purines and pyrimides. Purines have __ ring(s) in their structure, and pyrimidines have __ ring(s) in their structure.
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2 rings
1 ring
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What are the two purine bases?
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Adenine and guanine
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What are the two pyrimidine bases?
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Thymine and cytosine
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Chargaff's rule states that the DNA of any species contains equal amounts of ________ and _________ and also equal amounts of _________ and _________
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Guanine and cytosine
Adenine and thymine
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Based on this information, scientist could predict that the base _______ pairs with _____ and the base _______ pairs with _________ in the formation of a DNA molecule
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Adenine and Thymine
Guanine and Cytosine
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This is called complementary base pairs. This one strand of DNA is complementary to the other ______ strand
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Opposite
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The bases are paired by _______ bonds along the axis of the molecule
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Hydrogen
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Wilkins and Franklin studied the structure of DNA using _____________, a technique to examine molecules, and helped Watson and Crick determine that th shape of the molecule was a _______ _______.
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X-Ray Crystallography
Double Helix
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Write a complementary sequence to
AATTCGCCGGTATTAGACGTT
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TTAAGCGGCCATAATCTGCAA
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Finish the sequence
Left side:
ATGC _, _,
Right side:
_, _,_,_,_,_,
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AC
TACGTG
