Biology is the study of life and living organisms. It involves studying everything from molecular mechanisms within cells to the classification and behavior of organisms and how species evolve and interact within ecosystems. There are many fields of study within biology, including zoology, botany, microbiology, ecology, anatomy, biochemistry, morphology, physiology, biotechnology, and medicine. The study of biology helps us understand ourselves, our behavior, how our bodies work, how we are related to other organisms, and the world we live in.

1. By
Dewi Sivasamy

2. The word biology is derived from the greek words
/bios/ meaning /life/ and /logos/ meaning /study/ and
is defined as the science of life and living organisms.
An organism is a living entity consisting of one cell e.g.
bacteria, or several cells e.g. animals, plants and
fungi. Aspects of biological science range from the
study of molecular mechanisms in cells, to the
classification and behaviour of organisms, how
species evolve and interaction between ecosystems.

3. Field fo study in Biology
• Zoology
• Botany
• Microbiology
• Ecology
• Anatomy
• Biochemstry
• Morphology
• Physiology
• Biotechnology
• Medicine/ veterinary
• biomedine

4. CHAPTER 1 INTRODUCTION TO BIOLOGY
CHAPTER 2 CELL STRUCTURE AND CELL
ORGANISATION
CHAPTER 3 MOVEMENT OF SUBSTANCES ACROSS
THE PLASMA MEMBRANE
CHAPTER 4 CHEMICAL COMPOSITION OF THE CELL
CHAPTER 5 CELL DIVISION
CHAPTER 6 NUTRITION
CHAPTER 7 RESPIRATION
CHAPTER 8 DYNAMIC ECOSYSTEM
CHAPTER 9 ENDANGERED ECOSYSTEM

5. As man is a living organisms so the study of biology helps us to
understand ourselves and our behavior.
For many of you the most interesting part of biology may be the study
of yourself; how your body works; how it reacts to diseases; how
you resemble or differ from other people such as your
sisters, brothers and parents.
You will also learn how you and other living things came to be on this
Earth, as part of the origin of life and the process of evolution of
organisms.
The study of man is not complete unless we also make a comparative
study of other animals. For example, by studying the working of
muscles in a frog, or the digestive, respiratory and nervous system
of a mammal such as the rabbit, we can understand much better
how such systems work in our own bodies.

6. By studying plants man has found that certain plants have
medicinal value from which he has been able to
manufacture drugs (e.g. penicillin and streptomycin) which
have proved effective in the treatment of certain diseases.
An ever-increasing human population requires more and more
food.
Food production can be increased by a careful study of plants
and soil.Above all, biology helps us to understand ourselves
and the world we live in.

7. Career related to science
• Medicine
• Nursing
• Dentistry
• Pharmacy
• Veterinary