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6.4 Classification of living organisms

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Question 5

Early microscopes showed that microorganisms J and K were both single cells with a similar oval shape. They were therefore classified together.

Scientists later collected the following evidence.

MicroorganismInternal structures observed using an improved microscopeSimilarity to the chemical profile of known Bacteria / %Similarity to the chemical profile of known Archaea / %Similarity to the chemical profile of known Eukaryota / %
JNo complex internal structures visible913614
KSeveral complex internal structures visible121788

Explain how the new evidence should affect the classification of microorganisms J and K. Include the domain in which each microorganism should be classified.

[4]
Markscheme

6.4 Classification of living organisms Questions

  1. GCSE
  2. /Biology
  3. /6.4 Classification of living organisms

81 exam-style questions on AQA GCSE Biology 6.4 Classification of living organisms, covering 6.4 Classification of living organisms. Each one has a worked solution and a mark scheme showing where the marks go.

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