Table of Contents

Unit 1: 1.1 Chemical elements and biological compounds; 1.2 Cell structure and organisation; 1.3 Cell membranes and transport; 1.4 Enzymes and biological reactions;1.5 Nucleic acids and their functions; 1.6 The cell cycle and cell division; Exam practice questions; Unit 2: 2.1 Classification and biodiversity; 2.2 Adaptations for gas exchange; 2.3a Adaptations for transport in animals; 2.3b Adaptations for transport in plants; 2.4 Adaptations for nutrition; Exam practice questions; Answers; Glossary; Index

About the Author

Dr Marianne Izen has over thirty years' experience as an A Level Biology teacher and examiner, and has provided science teacher training for schools across the UK. Before teaching, Marianne conducted research in universities in both the UK and the USA, on plant cells, and published papers on their behaviour in tissue culture. She is a Principal Examiner for a major awarding body.