1. CELLS

2. Robert Hooke
Robert Hooke- 1st person to view a cell under a microscope, given credit for naming cells.

3. CELL THEORY Cell Theory- made up of three parts
1. Cells are basic building block of all living things
2. All life activities take place in cells
3. New cells are produced by
existing cells

4. Cell Organelles

5. Cell Organelles
Organelle- tiny structures that carry out cell activities

6. Cell Membrane
Cell Membrane- surrounds the cell and controls what goes in and out of the cell
Semi-permeable
acts much like a filter or
screen - some things pass,
others cannot

7. Nuclear Membrane
Nuclear Membrane- Surrounds the nucleus and controls materials moving in and out of the nucleus

8. Nucleus
Nucleus- control center of the cell, directs all the cell’s activities
Contains DNA
Usually the easiest organelle to see under a microscope
Usually one per cell

9. Cytoplasm
Cytoplasm- Jelly-like substance that fills the cell and contains the other parts of the cell

10. Chromosomes
Chromosome- Holds the instructions for all traits of a cell

11. DNA
DNA- chemical found in the chromosomes, that directs life activities, “Blueprint of Life”

12. Mitochondria Mitochondria- Stores and releases the energy
“Powerhouse of the cell”

13. Chloroplast
Chloroplast- Contains chlorophyll that absorbs energy from the sun to help the plant make food

14. Cell Wall
Cell Wall- Stiff outer layer that protects and gives a plant cell its’ shape
Found in plant cells
This is an actual microscopic image. Colors are added digitally to enhance the different parts.

15. Vacuoles Vacuoles- Storage container for water, food, wastes
Larger vacuoles usually in plant cells
Many smaller vacuoles in animal cells

16. Quick Review Which organelle is the control center of the cell?
Which organelle holds the cell together?
Which organelles are not found in animal cells?
Which organelle helps plant cells make food?

17. Enjoy these photos and diagrams of the
cell organelles!

20. …the Cell Wall

22. Mitochondria!

24. The nucleus with other structures…