Wednesday 12 May 2027, 13:00 to 15:00. One paper, 80 marks.
Date
Wednesday 12 May 2027
Time
13:00 to 15:00
Paper
80 marks: Section 1, 20 marks; Section 2, 60 marks
Before the day
Find your weakest section with the free test, then practise it first.
Time a Section 1 practice paper: 20 questions in about 30 minutes.
Write full answers to Section 2 questions and compare them with the mark points.
Try 2 questions
Question 1
Oxygen above, and ethanol in, a sealed flask of yeast in glucose solution.
Time (minutes)
Oxygen in the air (%)
Ethanol (g per litre)
0
21
0
20
6
0
40
0
0.3
60
0
0.8
80
0
1.3
Yeast in glucose solution is kept in a sealed flask. The table shows the oxygen in the air above it and the ethanol in the solution; carbon dioxide is released throughout. Which describes the yeast's respiration from 40 to 80 minutes?
The graph shows the rate of photosynthesis of a plant at 20 °C. For the plant in 0.04% carbon dioxide, which factor limits the rate at a light intensity of 8 units?