For the 2026 series, Paper 1 consists of 40 multiple-choice questions (MCQs), and Paper 2 is a structured theory paper (80 marks) where all questions are now compulsory. Section A: Sample Exam Questions
Anaerobic (without O₂)
Definition: Movement of particles against a concentration gradient (low to high) using energy from respiration.
Example: Root hair cells absorbing mineral ions from soil.
The Syllabus Gap: Most students never print the 5090 syllabus (2023–2025). The syllabus is the ultimate mark scheme. If a topic isn’t in the "Content" column, it will never appear on the exam. Better notes start by mirroring the syllabus exactly, not the textbook order. biology o level 5090 notes better