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  • Created by: GGB2016
  • Created on: 21-06-16 17:28

1. What are stem cells?

  • Cells that produce cancer
  • Cells that have become differentiated
  • Cells that are undifferentiated but can become specialised
  • Cells that are not totipotent and can only produce 1 cell type
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2. What is a clone?

  • A group of genetically identical organisms formed from a single parent
  • A group of similar organisms formed from a single parent
  • A group of genetically identically organisms formed by sexual reproduction
  • A group of similar organisms formed from two parents

3. What is recombinant DNA?

  • Undifferentiated cells that have the potential to become specialised
  • Foreign DNA inserted into another section of DNA
  • Incorrect DNA
  • DNA that codes for a non functional protein

4. Which of these is NOT used to form recombinant DNA?

  • Reverse transcriptase
  • RNA polymerase
  • DNA polymerase
  • DNA ligase
  • Restriction endonucleases

5. Why is the DNA sample cooled from 70 degrees to 55 degrees?

  • Allows DNA polymerase to add free nucleotides to make a new molecule of DNA
  • To allow reverse transcriptase to convert RNA to DNA
  • Allows primers to attach to DNA strands and mark where DNA polymerase attaches
  • Allows the hydrogen bonds between the two strands of the DNA to break causing them to separate


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