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Ace your Edexcel IGCSE Biology exams with this official November 2021 Paper 1B question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers bread starch test (iodine solution turns blue-black), fungus on bread (mycelium, amylase enzyme), blood cells (red blood cells 5.0×10⁶ per mm³, white blood cells 6.0×10³ in standard form, red b...

Exam (elaborations)
• 28 pages •
by AcademicsExcellence •
uploaded 2026

i x

Senior / 12th grade • BIOLOGY

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – January 2022 (1BR version) Question Paper

Ace your Edexcel IGCSE Biology exams with this official January 2022 Paper 1BR question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers desert food web (secondary consumers, longest food chain, energy transfer efficiency), fennec fox natural selection (large ears and thin body for heat loss), eye structure (cornea, ciliary muscles an...

Exam (elaborations)
• 40 pages •
by AcademicsExcellence •
uploaded 2026

i x

Senior / 12th grade • BIOLOGY

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – January 2022 Question Paper

Ace your Edexcel IGCSE Biology exams with this official January 2022 Paper 1BR question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers inhaled vs exhaled air comparison using limewater apparatus (carbon dioxide turns limewater cloudy), diaphragm and intercostal muscles role in inhalation (contracts, ribs move up and out, volume incr...

Exam (elaborations)
• 32 pages •
by AcademicsExcellence •
uploaded 2026

i x

Senior / 12th grade • BIOLOGY

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – May 2024 Question Paper

Ace your Edexcel IGCSE Biology exams with this official May 2024 Paper 1BR question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers onion epidermis cells (human red blood cell components – no nucleus, no cell wall, has cytoplasm), tissue definition, serial dilution to make 5% sucrose solution from 10% solution, plasmolysis explanat...

Exam (elaborations)
• 36 pages •
by AcademicsExcellence •
uploaded 2026

i x

Senior / 12th grade • BIOLOGY

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – May 2023 Question Paper

Ace your Edexcel IGCSE Biology exams with this official May 2023 Paper 1BR (4BI1/1BR) question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers Lactobacillus bacteria (ribosome function, protein synthesis, cell components table, why bacterial cells don't burst in distilled water due to cell walls, yoghurt production from milk), len...

Exam (elaborations)
• 40 pages •
by AcademicsExcellence •
uploaded 2026

i x

Freshman / 9th grade • BIOLOGY

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – January 2023 Question Paper

Ace your Edexcel IGCSE Biology exams with this official January 2023 Paper 1BR (4BI1/1BR) question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers: ️ Gas exchange & breathing – thorax structure (bronchus identification), diaphragm movement during inhalation, differences between inhaled and exhaled air (oxygen decrease, carb...

Exam (elaborations)
• 32 pages •
by AcademicsExcellence •
uploaded 2026

i x

Freshman / 9th grade • Biology

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – May 2022 Question Paper

Ace your Edexcel IGCSE Biology exams with this official May 2022 Paper 1BR (4BI1/1BR) question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications. This authentic past paper covers: Plant cells – nucleus identification, structures not found in animal cells, storage carbohydrates (starch), magnification calculations (125μm to diagram)

Exam (elaborations)
• 32 pages •
by AcademicsExcellence •
uploaded 2026

i x

Freshman / 9th grade • Biology

Edexcel IGCSE Biology Paper 1BR (4BI1/1BR) – January 2020 Question Paper

$21.49

Ace your Edexcel IGCSE Biology exams with this official January 2020 Paper 1BR question paper, exactly the type used by the British International School of Boston – the only private high school in Boston, Massachusetts offering Pearson Edexcel IGCSE qualifications . This authentic past paper covers all core topics: human organ functions (bile, progesterone, excretion), heart anatomy and valves, gas exchange in alveoli, bacterial resistance to antibiotics, yeast respiration and temperature effe...