B2.1.5 - DNA Functions
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14 Terms
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What molecule makes up the backbone of DNA?
phosphodiester
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What two things make DNA stable?
phosphodiester backbone, hydrogen bonds
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How does the phosphodiester backbone increase the stability of DNA?
protects the bases inside the double helix
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How do the hydrogen bonds increase the stability of DNA?
link bases forming bridges between uprights
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Define 'DNA':
hereditary material responsible for passing genetic information from cell to cell
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How does being stable help DNA achieve its function?
rarely mutates
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How does having two separate strands help DNA achieve its function?
hydrogen bonds can easily separate
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How does being extremely large help DNA achieve its function?
carries a lot of genetic information
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How does having base pairs within the double helix help DNA achieve its function?
genetic information is protected
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How does base pairing help DNA achieve its function?
information is easily replicated
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How many hydrogen bonds are between cytosine and guanine?
three
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How many hydrogen bonds are between adenine and thymine?
two
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Which base pair in DNA has two hydrogen bonds between it?
adenine and thymine
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Which base pair in DNA has three hydrogen bonds between it?
cytosine and guanine