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6.1 Photosynthesis

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Question 5

A spinach leaf makes glucose from carbon dioxide and water and releases oxygen. The formulae are carbon dioxide, CO2CO_2CO2​; water, H2OH_2OH2​O; glucose, C6H12O6C_6H_{12}O_6C6​H12​O6​; and oxygen, O2O_2O2​.

How many molecules of oxygen are released when the leaf makes one molecule of glucose?

[1]
A

2 molecules of oxygen

B

6 molecules of oxygen

C

1 molecule of oxygen

D

12 molecules of oxygen

Markscheme

6.1 Photosynthesis Questions

  1. GCSE
  2. /Biology
  3. /6.1 Photosynthesis

87 exam-style questions on Edexcel GCSE Biology 6.1 Photosynthesis, covering 6.1.1 Photosynthetic organisms as producers, 6.1.2a Limiting factors on the rate of photosynthesis, 6.1.2b Interactions of limiting factors on photosynthesis, and 6.1.3 Inverse square law and light intensity. Each one has a worked solution and a mark scheme showing where the marks go.

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