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4.1 Photosynthesis

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Question 9

A student writes this equation for photosynthesis, leaving one coefficient blank:

6CO2+6H2O→C6H12O6+□O26\text{CO}_2 + 6\text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + \square\text{O}_26CO2​+6H2​O→C6​H12​O6​+□O2​

Calculate the coefficient that should replace the square. Explain your answer by showing how the oxygen atoms balance.

[3]
Markscheme

4.1 Photosynthesis Questions

  1. GCSE
  2. /Biology
  3. /4.1 Photosynthesis

68 exam-style questions on AQA GCSE Biology 4.1 Photosynthesis, covering 4.1.1 Photosynthetic reaction, 4.1.2 Rate of photosynthesis, and 4.1.3 Uses of glucose from photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.

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