Quiz On Biological DNA Double Helix Structure

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The “double” in double helix means DNA has:

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What connects the two strands of DNA like the steps of a ladder?

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What is the backbone of a DNA strand made of?

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What shape is DNA often described as?

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Which base always pairs with cytosine (C)?

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A double helix model helps students understand:

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DNA contains instructions for building:

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Which base always pairs with adenine (A)?

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Quiz On Biological DNA Double Helix Structure
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