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2024 OCR GCSE (9–1) Biology B (Twenty First Century Science) J257/03 Breadth in biology (Higher Tier) MARKING SCHEME AND QUESTION PAPER MERGED$7.99
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GCSE (9–1) Biology B
(Twenty First Century Science)
J257/03 Breadth in biology (Higher Tier)
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 usethe lined
page 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 begiven
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 [ ].
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
OCR is an exempt Charity
Turn over
, 2
1 A student is investigating how light intensity affects the rate of photosynthesis.
(a)
(i) Fig. 1.1 shows the equipment the student sets up.
Fig. 1.1
Table lamp Bubbles
Pondweed
Water
Describe the method the student will use with the equipment in Fig. 1.1 to find how light intensityaffects
the rate of photosynthesis.
Include in your answer:
• what they will change
• what they will keep the same
• what data they will record.
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