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CCEA GCSE Double Award Science B2 Body Systems, Genetics, Microorganisms and Health quiz quiz

16questions. Pick an answer and you'll see why right away.

  1. What is osmosis?

  2. A plant cell placed in pure water becomes:

  3. Which tissue carries dissolved sugars around a plant?

  4. Why does the left ventricle have a thicker wall than the right?

  5. Which blood vessel has valves to stop backflow?

  6. In DNA, which bases pair together?

  7. How many chromosomes are in a normal human body cell?

  8. Mitosis produces:

  9. What does heterozygous mean?

  10. Two heterozygous parents (Bb x Bb) have children. What fraction is expected to be homozygous recessive (bb)?

  11. What are the sex chromosomes of a human male?

  12. Height in humans is an example of:

  13. How does a population of bacteria become resistant to an antibiotic?

  14. How does a white blood cell defend the body by phagocytosis?

  15. Why can antibiotics not treat a cold?

  16. Which substance in tobacco smoke reduces the oxygen carried by the blood?