2025 GCSE (9–1) Biology B (Twenty First Century Science) J257/02 Depth in Biology (Foundation Tier) (Verified Question Paper With Mark Scheme Combined June 2025)

Monday 9 June 2025 – Morning GCSE (9–1) Biology B (Twenty First Century Science) J257/02 Depth in Biology (Foundation Tier) Time allowed: 1 hour 45 minutes (Verified Question Paper With Mark Scheme Combined June 2025) 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 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 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 24 pages. ADVICE •Read each question carefully before you start your answer. 1 (a)Which system transports oxygen and dissolved food molecules around the human body in the blood? Tick () one box. Circulatory system Digestive system Excretory system Gaseous exchange system [1] (b)Which organ pumps blood around the human body? Tick () one box. Brain Eye Heart Kidney [1] (c)Which type of blood vessel has valves to stop blood flowing backwards? Tick () one box. Artery Capillary Neuron Vein [1] (d)Draw lines to connect each part of the blood with its correct function. Part Function [3] 2 (a)Put these three structures in order of size, from the largest to the smallest. Chromosome Gene Nucleotide Largest ............................................... ............................................... Smallest ............................................... [2] (b)Which statement describes the genome? Tick () one box. A section of DNA that stores the instructions to make a protein. All the physical features of an organism. The combination of alleles that an organism has. The entire genetic material of an organism. [1] (c)Draw lines to connect each description with the correct number. Description Number [3] 3 Organisms can be classified based on their sub-cellular structures. (a)Fig. 3.1 is a diagram of a cell showing its sub-cellular structures. Fig. 3.1 Chloroplasts Cytoplasm Nucleus Cell wall Cell membrane Mitochondria Permanent vacuole (i) Classify the organism that the cell in Fig. 3.1 has come from. Tick () one box.