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A-level BIOLOGY
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Please write clearly in block capitals. 
Centre number Candidate number 
Surname 
Forename(s) 
Candidate signature 
I declare this is my own work. 
A-level 
BIOLOGY 
Paper 3 
Time allowed: 2 hours 
Materials 
For this paper you must have: 
• a ruler with millimetre measurements 
• a scientific calculator. 
Instructions 
• Use black ink or black ball-point pen. 
• Fill within the boxes at the top based on this page. 
• Answer all questions withi...
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aQa A-level BIOLOGY Paper 3 (7402/3) June 2022 Official Question Paper
PopularaQa A-level BIOLOGY Paper 3 (7402/3) June 2022 Official Question Paper 
Amino acids are used to make proteins. Table 1 shows the R groups of six different amino acids. 
 
Table 1 
 
 
 
.	Use Table 1 to identify the three different amino acids used to make the polypeptide shown in Figure 1. 
[2 marks] 
 
Figure 1 
 
 
 
 
 
 
Left amino acid 	 
Middle amino acid 	 
Right amino acid 	 
 
 
 
 
Question 1 continues on the next page 
 
 
 
Turn over ► 
 
.	Table 2 shows three statements and...
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Ocr A Level Biology A Paper 1, 2 & 3 June 2026 Question Papers And Mark Schemes
NuevoThis is the official question papers and the final mark schemes
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Ocr A Level Biology A H420/03 June 2026 Question Paper And Mark Scheme
NuevoThis is the official question paper and the final mark scheme
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Ocr A Level Biology A H420/02 June 2026 Question Paper And Mark Scheme
NuevoThis is the official question paper and the final mark scheme
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Ocr A Level Biology A H420/01 June 2026 Question Paper And Mark Scheme
NuevoThis is the official question paper and the final mark scheme
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OCR A Level Biology A H420/02 JUNE 2026 MARK SCHEME: Biological diversity 

NuevoThis is the final mark scheme
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OCR A Level Biology A H420/03 JUNE 2026 MARK SCHEME: Unified biology 

NuevoThis is the final mark scheme
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OCR A Level Biology A H420/01 JUNE 2026 QUESTION PAPER: Biological processes
NuevoThis is the official question paper
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OCR A Level Biology A H420/02 JUNE 2026 QUESTION PAPER: Biological diversity 

NuevoThis is the official question paper
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OCR A Level Biology A H420/03 JUNE 2026 QUESTION PAPER: Unified biology 

NuevoThis is the official question paper
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OCR A Level Biology A H420/01 JUNE 2026 MARK SCHEME: Biological processes
NuevoThis is the final mark scheme
Examen
A-Level Biology Paper 1 June 2025 Mark Scheme Overview Exams With 100% Accurate Answers Newest Updated 2025/2026 Best Graded A+ For Pass
NuevoA-Level Biology Paper 1 June 2025 Mark Scheme Overview Exams With 100% Accurate Answers Newest Updated 2025/2026 Best Graded A+ For Pass
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WBI11 01 Biology Unit 1: Molecules, Diet, Transport and Health exam
NuevoFull mark scheme-style answers for Pearson Edexcel International A-Level Biology Unit 1: WBI11 01 – Molecules, Diet, Transport and Health. Covers all core topics from a genuine past paper including: calculating percentage increase in artery wall thickness from a plaque (atheroma) photomicrograph; explaining how atherosclerosis damages heart muscle (hypoxia, myocardial infarction); assessing CVD risk using total cholesterol:HDL ratio and LDL particle size (small vs large LDL – Graph 2 analysi...
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A-Level Biology Paper 1 June 2025 | Exam Q&A & Mark Scheme 
 

NuevoAQA A-level Biology Paper 1 practice with verified answers on lipids, enzymes, genetics, microscopy, and photosynthesis. June 2025 specimen. 
A-level biology paper 1, AQA biology exam 2025, biology A-level practice questions, enzyme action induced fit model, lipid digestion micelles, mRNA splicing pre-mRNA, RNA polymerase mechanism, competitive inhibition galactose, prokaryotic cell structures, SEM vs TEM resolution, Spearman rank correlation, non-disjunction mutation, antibiotic resistance sele...
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AQA A-LEVEL BIOLOGY Paper 1 Combined 
Question Paper and Mark Scheme
NuevoAQA A-LEVEL BIOLOGY Paper 1 Combined 
Question Paper and Mark Scheme
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AQA A-LEVE BIOLOGY Paper 3 Combined Question Paper and 
Mark Scheme
NuevoAQA A-LEVE BIOLOGY Paper 3 Combined Question Paper and 
Mark Scheme
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AQA A-LEVEL BIOLOGY Paper 2 Combined Question Paper and 
Mark Scheme
NuevoAQA A-LEVEL BIOLOGY Paper 2 Combined Question Paper and 
Mark Scheme
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AQA A Level Biology Revision Notes & Exam Practice PDF
NuevoThis AQA A Level Biology Revision PDF offers a well-structured collection of concise notes, clear explanations, and exam-style questions designed to help students efficiently review all key topics, strengthen understanding, and boost confidence for achieving high grades in exams.
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AQA A Level Biology Year 1 (AS) Complete Revision Notes PDF
NuevoThis AQA A Level Biology Year 1 PDF is a comprehensive revision resource covering all AS topics with clear, structured notes, concise explanations, and exam-style questions to help students build a strong foundation, reinforce understanding, and confidently prepare for assessments and exams.
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AQA A Level Biology Complete Revision Notes & Exam Practice PDF
NuevoThis AQA A Level Biology PDF is a complete revision resource designed to support students throughout the entire course, featuring well-structured notes, clear explanations, and exam-style questions that cover all key topics in the specification, making it ideal for effective revision, concept mastery, and achieving top grades in exams.
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AQA A-Level Biology Paper 2 Revision Notes & Exam Questions PDF
NuevoThis AQA A-Level Biology Paper 2 PDF is a focused revision resource featuring clear topic summaries, detailed explanations, and exam-style questions with answers to help students strengthen their understanding of key Paper 2 content, making it ideal for targeted revision, practice, and achieving high marks in exams.