This book includes material from the 4 chapters of Volume A' that were added to the 2022 exam syllabus. 

Deoxyribonucleotides, reverse transcriptase, ribonucleoprotein particles, restriction endonucleases are just some of the concepts that students need to understand and use in order to succeed in the Biology course for the 3rd year of High School Health Studies. 

Is Biology really that difficult and the mystery of life so complex? Studying this mystery is a fascinating journey into the world of knowledge, and the Biology course, with the appropriate interpretation, proves to be interesting and understandable. This book aims to accompany candidates on this journey and to interpret, in a simple yet scientific manner, biological phenomena and laboratory techniques described in the exam syllabus. 

Each chapter contains: 

• complete analysis of the theory, accompanied by images, figures, and diagrams 
• explanation of difficult points in the material 
• useful methodology for solving exercises 
• model exercises with complete answers 
• exercises for solving 
• multiple-choice and short-answer questions. 

Following are combined topics with exercises (addition of the present edition) and critical thinking questions with answers. 

At the end of the book, all exercises for solving, multiple-choice and short-answer questions, as well as the exercises from the school textbook, are answered.