1. Cell Structure and Function
Unit 7 Lesson 1
Cell Structure and Function

2. Who DISCOVERED THE CELL?
Robert Hooke in 1665
BUT
Anton van Leeuwenhoek
was the first person to see a live cell under a microscope.

3. The cell
The cell is the smallest unit of structure and function in all living things.
All living things are composed of cells.
Each cell has a specific function within an organism.
Plant cells differ from animal cells.

4. What are some identifying functions of living things?
Grow and reproduce
Adapt and respond
Remove wastes
Digest food
Perform RESPIRATION
These functions must also be done at the cellular level.

5. Tissues Tissues are made up of Cells.
They work together to perform a specialized function.

6. organs
Organs are structures that contain at least 2 different types of tissue that function together for a common purpose.
Examples: Heart, liver, kidneys, skin, pancreas, etc.

7. Organs in the human body
What is the largest external organ of the human body?
SKIN
What is the largest internal organ of the human body?
LIVER

8. ORGAN SYSTEM
A group of organs that work together to perform a certain function.
How many systems are in the human body? 11

9. Organism
An organism is made up of many different systems that work together to support life.

10. Levels of Organization
CELL
TISSUE
ORGAN
ORGAN SYSTEM
ORGANISM
Cell