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OCR 2024 GCSE Biology B (Twenty First Century Science) J257/02 Depth in Biology (Foundation Tier) With Marking Scheme Merged

OCR 2024 GCSE Biology B (Twenty First Century Science) J257/02 Depth in Biology (Foundation Tier) With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 7 June 2024 – Afternoon GCSE (9–1) Biology B (Twenty First Century Science) J257/02 Depth in Biology (Foundation Tier) Time allowed: 1 hour 45 minutes You must have: F • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J 2 5 7 0 2 * Please write clearly in black ink. Do not write in the barcodes. Centre number First name(s) Last name INSTRUCTIONS Candidate number • 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 20 pages. ADVICE • Read each question carefully before you start your answer. 2 1 Some types of bacteria can make us unwell. (a) Here is a diagram of three cells. Cell A Cell B Cell C Mitochondria Cell wall Nucleus Loop of DNA containing DNA in the cytoplasm Which cell is a bacteria cell? Tick (✓) one box. A B C Use the diagram to explain your answer. .......................................................................................................................................................... ..............................................................................................................................................