All living things are composed of cells, which are the fundamental unit of structure and function. Cells can exist as single-celled organisms like bacteria or as multicellular organisms with specialized cell types like humans. The cell theory states that cells are the basic units of life, cells come only from preexisting cells, and all living things are made of one or more cells that carry out basic functions like metabolism, response to stimuli, and reproduction.

1. CHAPTER 1
CELL THEORY
CELL THEORY, PLANT AND ANIMALS CELLS, PLANT AND
ANIMAL TISSUES, SPECIALIZED PLANT AND ANIMAL CELLS

2. CELL THEORY
• CELL IS THE FUNDAMENTAL UNIT OF LIVING THINGS.
• IT IS THE BASIC UNIT FOR THE REPRODUCTION OF LIVING
THINGS.

4. POSTULATES OF CELL THEORY
• ALL LIVING THINGS ARE MADE UP OF CELLS.
SOME ARE UNICELLULAR (EG. BACTERIA).
SOME ARE MULTICELLULAR (EG. HUMANS)

7. POSTULATES OF CELL THEORY

8. POSTULATES OF CELL THEORY

9. POSTULATES OF CELL THEORY

10. POSTULATES OF CELL THEORY

11. POSTULATES OF CELL THEORY

12. TYPES OF CELL BASED ON STRUCTURE OF
NUCLEUS

14. STRUCTURE AND FUNCTION