A structure is 25 mm long on a micrograph at ×5000. Its actual length is

  1. 0.5 µm
  2. 50 µm
  3. 5 µm
  4. 125 µm
Answer

C) 5 µm

25 000 µm ÷ 5000 = 5 µm. AS & A Level Biology · Topic 1 Cell Structure · 1.1 The microscope in cell studies

Biology MCQ · More A Level Biology: Cell structure MCQs · Practise