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1.3 Respiration

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Question 23

A student measures the oxygen uptake rate of germinating seeds at two temperatures.

Temperature in °COxygen uptake rate in cm³ per minute
150.40
250.62

Calculate the percentage by which the oxygen uptake rate at 25 °C is greater than the oxygen uptake rate at 15 °C.

Write your answer as a whole percentage.

[2]
Markscheme

1.3 Respiration Questions

  1. GCSE
  2. /Biology
  3. /1.3 Respiration

113 exam-style questions on OCR GCSE Biology 1.3 Respiration, covering 1.3.1 Cellular respiration supplies ATP, 1.3.2 Aerobic and anaerobic respiration, 1.3.3 Sugars and carbohydrates, 1.3.4 Amino acids and proteins, and 1.3.5 Fatty acids and lipids. Each one has a worked solution and a mark scheme showing where the marks go.

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