Biology B2 Topic 1 Cells and microscopy

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1. What does a bacterium cell contain?

  • Flagellum, cytoplasm, mitochondria
  • Cell membrane, nucleus , ribosomes
  • Flagellum, chromosomal DNA, Plasmids, cell wall
  • Chloroplasts, nucleus, cell wall
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2. When were electron microscopes invented?

  • 1871
  • 1800's
  • 1930's
  • 1999

3. How do you work out the magnification?

  • Length of image + Length of specimen
  • Length of image divided by length of specimen
  • Length of specimen X 1000
  • 200 - Length of specimen

4. Where in the cell does photosynthesis occur?

  • In nucleus
  • In chlorophyll, in chloroplasts
  • In mitochondia
  • In plasmids

5. What do electron microscopes allow us to see?

  • Leaf cells
  • Internal structure of mitochondria and chloroplasts
  • Nuclei
  • Bacteria

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