19. The enzyme that assembies the hucleotides du A)DNA replicase. B) DNA ligase.

Question

19. The enzyme that assembies the hucleotides du A)DNA replicase. B) DNA ligase. C) DNA helicase. D) DNA polymerase. 20. DNA replication is described as semiconservative because it A) uses only a moderate amount of ATP B) preserves one of the parental nucleotide chains in each new DNA molecule. C) occurs during the S (semiconservative) phase of the cell cycle. D) does not result in a radical change in the genetic code. 21. The stage of mitosis where the sister chromatids part company and move to opposite poles of a cell is: A) anaphase B) G, phase C) prophase D) metaphase

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19) The enzyme that assemble nucleotides during DNA replication is DNA polymerase.
Option D

20) DNA replication is considered superconservative because it : preserves one of the parental nucleotide chain in each new DNA molecule.
- The new molecule to DNA consist of both, one old strand and one new strand.
Option B

21) In anaphase of mitosis the sister chromatids part company and move to opposite ople of the cell.
Option A
  

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