Biology Topic 2.3

  • Created by: TobyHill5
  • Created on: 17-04-18 09:09

1. What does DNA polymerase do

  • it catalyses the untwisting of the DNA
  • it catalyses the formation of DNA from activated deoxyribose nucleotides, using single stranded DNA as a template
  • it catalyses the breaking of hydrogen bonds between pairs of nitrogenous bases in a DNA molecule
  • it catalyses the joining of the fragments of DNA produced from the lagging strand
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Other questions in this quiz

2. The two DNA strands are.......

  • antiparallel
  • parallel

3. What is the anticodon

  • a triplet of bases on a tRNA molecule, complementary to the mRNA codon
  • a triplet of bases on a length of mRNA

4. Adenine + Thymine form ___ hydrogen bonds

  • 2
  • 3

5. Before self-replication, the DNA first must.....

  • find many nitrogenous bases
  • break all of its hydrogen bonds
  • unwind + unzip
  • release all of its nucleotide bases

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