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1. What is the order that organelles in animal cells are found in centrifugation?

  • Nucleus, mitochondria, smooth ER, rough ER, ribosomes
  • Nucleus, mitochondria, rough ER, smooth ER, ribosomes
  • Nucleus, rough ER, smooth ER, mitochondria, ribosomes
  • Nucleus, ribosomes, rough ER, smooth ER, mitochondria
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2. How are red blood cells adapted for their purpose?

  • Biconcave shape and no nucleus
  • Small nucleus
  • Flat shape
  • Red colour

3. What is homogenisation?

  • Combining cells together in a centrifuge
  • Mashing and filtering cells to make organelles same consistency
  • Mixing of cells

4. What is the purpose of a buffer?

  • To speed up osmosis
  • To control PH
  • To control temperature
  • To slow down osmosis

5. What are plasmids?

  • DNA in plant cells
  • Chromosomes in all cells
  • Small loops of DNA in bacteria
  • Chromosomes in bacteria


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