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Question 7

An electron micrograph shows drawings of a mitochondrion and a chloroplast.

  • For the mitochondrion:

    • The scale bar indicates that a length of 2.0 cm2.0\text{ cm}2.0 cm on the drawing represents an actual length of 300 nm300\text{ nm}300 nm.
    • The measured length of the mitochondrion on the drawing is 6.0 cm6.0\text{ cm}6.0 cm.

  • For the chloroplast:

    • The scale bar indicates that a length of 1.5 cm1.5\text{ cm}1.5 cm on the drawing represents an actual length of 1.8 μm1.8\text{ }\mu\text{m}1.8 μm.
    • The measured length of the chloroplast on the drawing is 4.5 cm4.5\text{ cm}4.5 cm.

Calculate how many times longer the actual chloroplast is than the actual mitochondrion. Show your working.

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Cell structure Questions

  1. A Level
  2. /Biology
  3. /Cell structure