DNA Replication and Structure – Flashcards
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How is DNA replication related to cancer?
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Cancer can result when errors occur in the DNA replication
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Why is it important that exact copies of DNA are produced during replication?
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Producing exact copies of DNA ensures that when a cell divides, the offspring will receive the same genetic information as the parent cell.
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Before replication can take place, what must happen? where? in what directions?
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The 2 strands of DNA must separate. Replication fork. 2 different directions.
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The primary function of DNA in cells is to
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store information that tells the cells which proteins to make
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There is always an equal percentage of adenine to thymine in DNA. Why?
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They will always match up with each other in the DNA strands.
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Guanine binds with
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cytosine
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Adenine binds with
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thymine and uracil (RNA)
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What bases are purines?
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adenine and guanine
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What bases are pyrimidines?
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thymine and cytosine
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The two strands of a DNA molecule are held together by
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Hydrogen Bonds
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What shape is the DNA molecule in?
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Double Helix
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DNA is a polymer of..
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nucleotides
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Which of the following best describes the arrangement of the sides of the DNA molecule
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anti-parallel
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The sugar in RNA is
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Ribose
