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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 substance or energy source that alters DNA.
  3. The 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.

3 True/False questions

  1. mismatch errorA pair of complementary nitrogenous bases that have formed hydrogen bonds with each other.

          

  2. apoptosisA pair of complementary nitrogenous bases that have formed hydrogen bonds with each other.

          

  3. complementary strandA 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.