O Level5090_w25_qp_21Written

Biology 5090/21 — October/November 2025

Paper 2 Theory (variant 1)

Question paper Mark scheme

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For the whole October/November 2025 seriesGrade thresholds

Grade boundaries for 5090/21

Grade	A	B	C	D	E
Marks	49	38	26	21	17

Minimum raw mark out of 80, from Cambridge's October/November 2025 grade thresholds. Cambridge sets A* only for the whole subject.

Also in October/November 20255090/11Paper 1 Multiple Choice 5090/12Paper 1 Multiple Choice 5090/22Paper 2 Theory 5090/31Paper 3 Practical Test 5090/32Paper 3 Practical Test

Paper 2 Theory — other years5090/21May/June 2026 5090/22May/June 2026 5090/22October/November 2025 5090/21May/June 2025 5090/22May/June 2025 5090/21October/November 2024 5090/22October/November 2024 5090/21May/June 2024 All Biology papers →

O Level Biology 5090/21 October/November 2025 — question paper & mark scheme (5090_w25_qp_21) | AssessPro