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Prepare your students for success with this comprehensive set of 23 exam-style questions tailored specifically to the Edexcel International A-Level Biology Unit 5 (June 2025) article question.

Based on the official pre-release articles:

**“Risk of heart failure may increase with age due to Y chromosome loss” – Claire Wilson (New Scientist)

“Essence of man: Y size doesn’t matter” – Bob Holmes (New Scientist)**

This resource includes a wide range of question types linked to the Edexcel specification, enabling students to develop skills required for top marks in the Unit 5 article section.

What’s Included:
23 original questions aligned to the 2025 article topics
Fully written mark schemes, in the style of Edexcel’s exam board guidance
A suggested topic revision list

Covers essential Unit 5 content areas:

DNA replication and mitosis
Regulatory genes and protein synthesis
Immune response and inflammation
Meiosis
Mutation
Sex chromosome evolution
Microarrays and gene expression analysis
Evolutionary trees and comparative genomics
Protein synthesis
DNA replication
Data interpretation and calculations based on real article stats

Perfect for:
Class revision sessions
Independent study
Homework tasks
Mock exam prep
Stretch and challenge activities for A/A* students