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5.2 Natural selection and evolution

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Question 8
F

Some bacteria become resistant to an antibiotic. Which statement explains how a population of resistant bacteria develops?

[1]
A

The antibiotic causes the bacteria to make antibodies against it.

B

The bacteria get used to the antibiotic and pass this on to offspring.

C

A resistant bacterium survives the antibiotic and then reproduces.

D

The antibiotic causes a mutation that makes every bacterium resistant.

Markscheme

5.2 Natural selection and evolution Questions

  1. GCSE
  2. /Biology
  3. /5.2 Natural selection and evolution

122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.

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