1. Unit 2: Cells

2. The Cell Theory
The cell is the basic unit of structure and function (a.k.a. – life)
All living things are made up of 1 or more cells
Cells come from other, preexisting cells (a.k.a. – reproduction)

3. What is a cell?
It is the smallest unit of life that carries out life functions
Animal Cell
Plant Cell

4. What’s Inside? Organelles
tiny structures within a cell that perform specific jobs to keep the cell alive

5. Important Organelles Cytoplasm - gel-like material inside cells

6. Important Organelles – Continued…
Cell Membrane - protects cell and gives it shape and controls what enters and leaves the cell.
Cell Membrane

7. Important Organelles – Continued…
Nucleus - directs cell activities (brain)
Nucleus

8. Important Organelles – Continued…
Endoplasmic Reticulum (ER) - movement of materials throughout cell ER

9. Important Organelles – Continued…
Ribosome - makes proteins
Ribosomes

10. Important Organelles – Continued…
Mitochondria - the powerhouse of the cell (converts food into energy for the cell)
Mitochondria

11. Important Organelles – Continued…
Chromatin/Chromosomes (DNA) - contains genetic information (inside the nucleus)
Chromatin

12. Important Organelles – Continued…
Chloroplast - takes energy from the sun and makes food for the PLANT cell (not found in Animal Cells)
Chloroplast

13. Important Organelles – Continued…
Cell Wall - supports and protects PLANT cells (not found in animal cells)
Cell Wall

14. Important Organelles – Continued…
Vacuole - storage of food and water
Vacuole

15. Important Organelles – Continued…
Golgi Body - packages and moves proteins
Golgi Body

16. Important Organelles – Continued…
Lysosome - digests wastes
Lysosome