AQA A Level Biology Paper 1 2025 Mark Scheme Pdf

Download the official AQA A-Level Biology Paper 1 mark scheme for the June 2025 exam (7402/1). This is the final examiner-approved marking guide used during standardisation, containing exact answers, marking criteria, and guidance on how marks are awarded.

The mark scheme provides detailed solutions for every question in the paper. For example, Question 1 explains lipid digestion and absorption with marking points such as increased surface area during emulsification and micelle transport (page 5). Question 3 includes full explanations of competitive inhibition, showing how galactose binds to the enzyme active site and reduces lactose hydrolysis (page 8). Extended-response answers, such as translation (Question 10 on page 18), outline all required marking points including ribosome function, tRNA roles, and ATP use.

It also includes examiner guidance such as the “own figure rule,” level-based marking, and how alternative valid answers are credited, ensuring consistency across all examiners. This resource is essential for understanding how marks are awarded and how to structure answers to achieve full marks. Fully updated for the 2025/2026 academic year and optimized for instant download on markscheme.net.

This mark scheme is essential for Year 13 students preparing for the 2026 AQA A-Level Biology exams who want to understand exactly how examiners award marks and what is required for full-mark answers. It is especially valuable when used alongside the question paper for targeted exam practice.

Teachers and tutors use this mark scheme to standardise marking, provide accurate feedback, and model high-level responses. It is also ideal for independent learners and retake students who want step-by-step answers and deeper insight into examiner expectations across Biology topics.