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EDEXCEL Biology A (Salters Nuffield) AS level QP 2 SUMMER JUNE 2026 PREDICTED PAPER

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EDEXCEL Biology A (Salters Nuffield) AS level QP 2 SUMMER JUNE 2026 PREDICTED PAPER

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Summer 2026 Predicted




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1 The diagram shows a human sperm cell and a human ovum.




(a) State two structural differences between a sperm cell and an ovum.

(2)




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, (b) For each difference stated in (a), explain how it is an adaptation for its role
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in fertilisation.

(4)
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(c) Describe the sequence of events that occurs from the sperm reaching the

ovum to the formation of a zygote.

(5)
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