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GCSE (9–1) Biology A (Gateway Science)J247/03 Paper 3(Higher Tier) best exams revision for 2022
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GCSE (9–1) Biology A (Gateway Science)J247/03 Paper 3(Higher Tier) best exams revision for 2022
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Oxford Cambridge and RSAH
Monday 15 November 2021 – Morning
GCSE (9–1) Biology A (Gateway Science)
J247/03 Paper 3 (Higher Tier)
Time allowed: 1 hour 45 minutes
You must have:
* 8 3 4 0 1 0 6 4 7 4 *
• a ruler (cm/mm)
You can use:
• a scientific or graphical calculator
• an HB pencil
* J 2 4 7 0 3 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 90.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2021 [601/8589/2] OCR is an exempt Charity
DC (ST/CT) 300829/8 Turn over
, 2
SECTION A
Answer all the questions.
You should spend a maximum of 30 minutes on this section.
Write your answer to each question in the box provided.
1 The diagram shows a potometer.
Cut leafy
twig X
Tap
Narrow
tube
cm
Water
0 1 2 3 4 5 6 7 8 9 10 Gas bubble
What is the purpose of the water in X?
A To provide water for the leafy twig.
B To reset the gas bubble to the start of the scale.
C To remove the gas bubble from the narrow tube.
D To measure the volume of water lost in transpiration.
Your answer [1]
© OCR 2021
, 3
2 Q10 is a measure of the rate of change of a reaction when temperature is increased by 10 °C.
Q10 is calculated using this formula:
Q10 = rate at higher temperature ÷ rate at lower temperature
An enzyme reaction has a rate of 36 units / min at 30 °C and 16 units / min at 20 °C.
What is the Q10 for this enzyme?
A 0.44
B 2.25
C 20
D 576
Your answer [1]
3 People with situs inversus have their organs reversed so they are a ‘mirror image’ of the usual
arrangement.
The diagram shows the heart from someone with situs inversus, viewed from the front.
A B
D C
Which chamber pumps blood to the lungs in someone with situs inversus?
Your answer [1]
© OCR 2021 Turn over
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