Unit 2 · Organisation of the Organism
Question Bank
Cambridge IGCSE Biology 0610 · 90 questions
Q62Organisation of the Organism
An image is 20 mm and the magnification is ×400. What is the actual size?
(a)8000 µm
(b)50 µm
(c)0.5 µm
(d)20 µm
Correct answer: (b) 50 µm
Explanation: 20 mm = 20 000 µm; 20 000 / 400 = 50 µm.
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