AS Biology AQA Unit 2

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1. 3 uses of mitosis

  • Repair, Growth and reproduction
  • Repair, differentiation and DNA replication
  • Growth, Differentiation and Repair
  • Growth, Differentiation and cytokinesis
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2. What does chemotherapy do to the cell cycle of cancerous cells?

  • Stop replication of DNA
  • Stop replication of DNA and inhibit spindle formation to stop metaphase.
  • Stop metaphase
  • Prevent G1 from occurring

3. What's the stage in which chromosomes thicken and become visible?

  • Prophase
  • Telophase
  • Interphase
  • Metaphase

4. Enzyme responsible for reforming hydrogen bonds and joining nucleotides to a polynucletide strand

  • DNA polymerase
  • DNA helicase
  • Ligase
  • RNA polymerase

5. Which blood vessel goes from the small intestine and stomach to the liver?

  • Hepatic portal vein
  • Hepatic vein
  • Renal vein
  • Renal artery


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