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  • 1. AS Biology AS Biology Practice Questions Practice Questions This is an image of the spines on a parasite magnified x1000. What is This is an image of a fish gill magnified x400. What is the size of an actual the actual length of one of these spines? Show your working out and filament on a fish gill. Show your working out and use appropriate units use appropriate units.
  • 2. AS Biology AS Biology Practice Questions Practice Questions This is a drawing of a cell from the pancreas. The actual distance of the cell from A to B is 8.6 micrometres. How many times magnified is this image? Show your working out This is an image of e.coli cells. They are typically two micrometres long. Roughly how many times magnified do they appear in this image?