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Antibiotics, culturing microorganisms and monoclonal antibodies

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Question 40

A student investigated the antibacterial effects of tea tree oil on E. coli bacteria grown on agar plates.

The clear zone (area with no bacterial growth) around a paper disc soaked in tea tree oil has a radius of 6 mm.

Calculate the area of this clear zone.

Use the equation:

Area of a circle=πr2 \text{Area of a circle} = \pi r^2 Area of a circle=πr2

Use π=3.14\pi = 3.14π=3.14.

Give your answer to 3 significant figures.

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Antibiotics, culturing microorganisms and monoclonal antibodies Questions

  1. GCSE
  2. /Biology
  3. /Antibiotics, culturing microorganisms and monoclonal antibodies