A-LevelBiologyBiodiversity and conservation9700/12 · May/June 2012 · Q391 Mark

What is the role of decomposers in the nitrogen cycle?

AThey convert proteins to ammonium compounds.

BThey fix atmospheric nitrogen.

CThey oxidise ammonium compounds to nitrites.

DThey oxidise nitrites to nitrates.

✓ Correct answer

A: They convert proteins to ammonium compounds.

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Topic: Biodiversity and conservation, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2012 Paper 1 Variant 2, question 39.

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