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Chapter 12 part 1 Test

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4 Written Questions

3 Multiple Choice Questions

  1. The structure of DNA, in which two long strands of covalently bonded nucleotidesare held together by hydrogen bonds and
    twisted into a spiral coil.
  2. A substance or energy source that alters DNA.
  3. A strand of DNA whose sequence of bases can pair (according to base-pairing rules) with the sequence of bases found in a focal DNA strand.

3 True/False Questions

  1. DNA polymeraseThe key enzyme that cells use to replicate their DNA. In DNA technology, DNA polymerase is used in the polymerase chain reaction to make many copies of a gene or other DNA sequence.


  2. mismatch errorA substance or energy source that alters DNA.


  3. DNA repairA pair of complementary nitrogenous bases that have formed hydrogen bonds with each other.


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