Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Biology Paper 1H
Time allowed: 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator.
1
Instructions 2
• Use black ink or black ball-point pen. 3
• Pencil should only be used for drawing. 4
• Fill in the boxes at the top of this page.
• Answer all questions in the spaces provided. 5
• If you need extra space for your answer(s), use the lined pages at the end of 6
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want to be TOTAL
marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• 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.
*jun218464b1h01*
IB/M/Jun21/E7 8464/B/1H
, 2
Do not write
outside the
0 1 Plants absorb light for photosynthesis. box
0 1 . 1 Which is the equation for photosynthesis?
[1 mark]
Tick () one box.
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
6 CO2 + 6 H2O → C6H12O6 + 6 O2
6 H2O + 6 O2 → C6H12O6 + 6 CO2
6 O2 + 6 CO2 → C6H12O6 + 6 H2O
A student investigated the effect of light intensity on the rate of photosynthesis.
Figure 1 shows the apparatus.
Figure 1
*02*
IB/M/Jun21/8464/B/1H
, 3
Do not write
outside the
This is the method used. box
1. Set up the apparatus as shown in Figure 1.
2. Place the pondweed 10 cm away from the lamp.
3. Switch on the lamp.
4. Record the number of bubbles of gas produced in 5 minutes.
5. Repeat steps 2 to 4 with the pondweed at different distances from the lamp.
0 1 . 2 What was the independent variable in this investigation?
[1 mark]
Tick () one box.
Distance of the pondweed from the lamp
Length of the piece of pondweed
Number of bubbles of gas produced
Time taken to collect the gas
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/8464/B/1H
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Biology Paper 1H
Time allowed: 1 hour 15 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator.
1
Instructions 2
• Use black ink or black ball-point pen. 3
• Pencil should only be used for drawing. 4
• Fill in the boxes at the top of this page.
• Answer all questions in the spaces provided. 5
• If you need extra space for your answer(s), use the lined pages at the end of 6
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want to be TOTAL
marked.
• In all calculations, show clearly how you work out your answer.
Information
• The maximum mark for this paper is 70.
• 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.
*jun218464b1h01*
IB/M/Jun21/E7 8464/B/1H
, 2
Do not write
outside the
0 1 Plants absorb light for photosynthesis. box
0 1 . 1 Which is the equation for photosynthesis?
[1 mark]
Tick () one box.
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
6 CO2 + 6 H2O → C6H12O6 + 6 O2
6 H2O + 6 O2 → C6H12O6 + 6 CO2
6 O2 + 6 CO2 → C6H12O6 + 6 H2O
A student investigated the effect of light intensity on the rate of photosynthesis.
Figure 1 shows the apparatus.
Figure 1
*02*
IB/M/Jun21/8464/B/1H
, 3
Do not write
outside the
This is the method used. box
1. Set up the apparatus as shown in Figure 1.
2. Place the pondweed 10 cm away from the lamp.
3. Switch on the lamp.
4. Record the number of bubbles of gas produced in 5 minutes.
5. Repeat steps 2 to 4 with the pondweed at different distances from the lamp.
0 1 . 2 What was the independent variable in this investigation?
[1 mark]
Tick () one box.
Distance of the pondweed from the lamp
Length of the piece of pondweed
Number of bubbles of gas produced
Time taken to collect the gas
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun21/8464/B/1H
