The figure illustrates (Multiple Choice)

The figure illustrates
  a. DNA repair.
  b. semiconservative replication.
  c. the action of the ligases.
  d. the action of glycosylases.
  e. DNA hybridization.

Question 2

The function of helicase enzymes is to
  a. break hydrogen bonds and unwind the two
  strands of the DNA molecule prior to
  replication.
  b. rewind the two DNA molecules after replication.
  c. remove bases that might have been inserted
  incorrectly.
  d. seal new short stretches of nucleotides into one
  continuous strand.
  e. fragment old DNA that is no longer of use to the
  cell.