A-A* (AO3/4) - Cell Size

Biology: AQA A Level, topic 3.1.2

Test yourself on A-A* (AO3/4) - Cell Size

  • Pictured on the previous slide are two cells along with their radius. What does cell B likely have when compared to cell A?

  • Which of the following is true regarding the surface-to-volume ratios of the cube and the sphere?

  • What is the major consideration in setting the lower limit of cell size?

  • Thiomargarita namibiensis is a large single cell organism, which can reach lengths of 700 μm . The cell is classified as a bacterium.

    What is the main argument to justify the classification?

  • Cells lining the intestine absorb a lot of nutrients. How did those cells adapt to their function?

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