Biology 9 – Human Biology (International)

The Biology 9 – Human biology textbook is designed for 9th grade biology. The book introduces the student to the human body and examines human organs, organ systems, reproduction and heredity. 

The book's texts present the subjects in a concise, easily understandable manner. The material's numerous exercises and interactive materials help the student to develop their skills and undertanding of the studied phenomena.

N.B! This version of the book is localised for use in international schools. For the version of the book intended for Finnish schools, see Opiq's library.

1. Humans consist of cells

Lead	Chapter
1.1.	How are cells studied? Free chapter!
1.2.	Cells are the building blocks of life
1.3.	Cells form tissues
1.4.	The skeletal system
1.5.	Muscles
1.6.	Checkpoint

2. Vital functions and senses

Lead	Chapter
2.1.	The digestive system
2.2.	The respiratory system
2.3.	Blood
2.4.	The heart and the circulatory system
2.5.	The liver and the kidneys
2.6.	The endocrine system
2.7.	Nerve cells
2.8.	The brain and the nervous system
2.9.	Vision
2.10.	Hearing
2.11.	Our other senses
2.12.	Research
2.13.	Checkpoint

3. Reproduction, heredity and evolution

Lead	Chapter
3.1.	Reproduction
3.2.	From fertilisation to birth
3.3.	Heredity
3.4.	How are our traits determined?
3.5.	Pathogens
3.6.	Biotechnology
3.7.	Evolution
3.8.	Checkpoint

4. Extras

Lead	Chapter
4.1.	For the teacher