In respiration, glucose is broken down.
0 1 . 1 What is the chemical formula for glucose?
[1 mark]
Tick one box.
C6H6O6
C3H6O3
C6H12O6
C6H10O6
Figure 1 shows the apparatus a student used to investigate aerobic respiration.
Figure 1
Limewater goes cloudy when carbon dioxide is added to it....
specimen 2018 set 2 time allowed 1 hour 45 minutes
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GCSE
BIOLOGY H
Higher Tier Paper 1H
Specimen 2018 (set 2) Time allowed: 1 hour 45 minutes
Materials For Examiner’s Use
For this paper you must have:
Question Mark
• a ruler
• a scientific calculator. 1
2
Instructions
3
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page. 4
• Answer all questions in the spaces provided. 5
• Do all rough work in this book. Cross through any work you do not want
6
to be marked.
• In all calculations, show clearly how you work out your answer. 7
8
Information
• The maximum mark for this paper is 100. TOTAL
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation
in your answers.
SPECIMEN MATERIAL IB/M/SAMs2/E1 8461/1H
, Do not write
2 outside the
box
0 1 In respiration, glucose is broken down.
0 1 . 1 What is the chemical formula for glucose?
[1 mark]
Tick one box.
C6H6O6
C3H6O3
C6H12O6
C6H10O6
Figure 1 shows the apparatus a student used to investigate aerobic respiration.
Figure 1
Limewater goes cloudy when carbon dioxide is added to it.
SPECIMEN MATERIAL IB/M/SAMs2/8461/1H
, Do not write
3 outside the
box
0 1 . 2 After 10 minutes the limewater in flask B was cloudy, but the limewater in flask A
remained colourless.
Explain why.
[2 marks]
0 1 . 3 Flask A acts as a control in this investigation.
What is the purpose of a control?
[1 mark]
0 1 . 4 The student repeated the investigation with no woodlice.
Describe what you would see in flask A and flask B after 10 minutes.
[2 marks]
Flask A
Flask B
Question 1 continues on the next page
Turn over ►
SPECIMEN MATERIAL IB/M/SAMs2/8461/1H
, Do not write
4 outside the
box
Anaerobic respiration is another form of respiration in living organisms.
0 1 . 5 What is produced during anaerobic respiration in humans?
[1 mark]
Tick one box.
Carbon dioxide
Carbon dioxide and lactic acid
Lactic acid
Oxygen and water
0 1 . 6 Complete the equation for anaerobic respiration in yeast.
[1 mark]
glucose carbon dioxide +
8
SPECIMEN MATERIAL IB/M/SAMs2/8461/1H
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