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4 Written questions

3 Multiple choice questions

  1. A three-step process in which damage to DNA is repaired. Damaged DNA is first recognizedthen removed, and then replaced with newly synthesized DNA.
  2. 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. A substance or energy source that alters DNA.

3 True/False questions

  1. apoptosisA substance or energy source that alters DNA.


  2. mismatch errorThe insertion of an incorrect nitrogenous base during DNA replication that is not detected and corrected.


  3. base pairA pair of complementary nitrogenous bases that have formed hydrogen bonds with each other.