This comprehensive resource pack is designed to support students and teachers preparing for the October 2025 Edexcel International A Level Biology Unit 5 (WBI15/01) examination.
It focuses on the scientific article pre-release about fruit bats and their genetic and physiological adaptations, linking to an understanding of gene expression, homeostasis, osmoregulation, and immunity.
The pack contains exam-style questions and model answers, perfect for classroom discussion, homework, revision, or mock paper preparation.
The question set comprehensively covers specification content likely to be assessed through this article:
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Gene expression and regulation
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Microarrays, regulatory DNA, and epigenetic control
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Kidney function and osmoregulation
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Salt and water reabsorption in the nephron
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Homeostasis
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Negative feedback, blood sugar control, insulin and glucagon balance
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Blood clotting
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The clotting cascade and the effect of toxins on enzyme activity
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Innate and adaptive immunity
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Interferon responses, inflammation control, and antibody formation
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