Biology Book 1 Answers , Edexcel International AS Level l PDF
This document provides answers for Unit 1 of the IAS Biology Student Book by Pearson, covering four topics: 1. Molecules, Transport, and Health 2. Membranes, Proteins, DNA, and Gene Expression 3. Gene Expression and Genetics 4. Development, Plants, and the Environment It includes detailed solutions, explanations, and exam practice questions to help students review key biological concepts.