This book contains the chapters that were added to the Biology curriculum for the 3rd year of Lyceum for the 2021 Panhellenic Examinations.

Initially, a brief review of terms and concepts analyzed in previous classes is provided, which helps in understanding the theory and avoiding rote memorization.
The following chapters include:
• Detailed presentation of the theory through questions and answers, accompanied by clear and informative diagrams that help in understanding complex biological processes.
• Combined questions.
• Methodology for solving exercises.
• Exercises, with exemplary solutions.
• Particularly demanding multiple-choice questions, which in the last three years have often cost candidates valuable points needed to achieve their goals.
• True-false questions to reinforce details of the theory.
• Answers to the questions in the school textbook.

The last chapter contains combined topics covering the entire curriculum, including topics from the Panhellenic Examinations from 2017 to September 2020.

At the end of the book, there are detailed answers to all the questions and exercises it includes.