1. Cell Structure & Function

2. Cell Theory All living things are made up of cells.
Cells are the smallest unit of life.
All cells come from preexisting cells.
What is the definition of a cell?
A cell is the smallest unit of life, what all living things are made of

3. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell
Nerve Cell

4. More Cell Types Nerve Cell Muscle Cell Bone Cell Small Intestine Cell
Cartilage Cell
Blood Cell

5. Prokaryotic Eukaryotic
Two Types of Cells
Prokaryotic
Eukaryotic

6. Animal Cell

7. Plant Cell

8. Called “Organelles” Surrounding the Cell Cell Membrane Cell Wall
Cell Structures
Called “Organelles”
Surrounding the Cell
Cell Membrane
Cell Wall

9. Cell Membrane Function:
Surrounds and protects the cell, lets things in and out
Animal, Plant, or Both
Analogy:
Door, Gate, Security Guard

10. Cell Wall Function: Supports & protects the cell
Gives a square or rectangular shape
Animal, Plant, or Both
Analogy:
Walls of house, fence

11. Inside the Cell Cytoplasm Nucleus Mitochondria Ribosomes
Endoplasmic Reticulum
(Rough ER & Smooth ER)
Golgi Bodies/Apparatus
Lysosomes
Centrioles
Central Vacuole
Chloroplasts

12. The cytoplasm is colored yellow in this diagram
Function:
Gel-like substance surrounded by cell membrane
Contains most organelles
Animal, Plant, or Both
Analogy:
Air in the house, water in a swimming pool

13. Nucleus
Function:
Controls all of the cell’s activities and contains the genetic material called DNA.
Includes 23 pairs of chromosomes that contain instructions for traits & characteristics
Animal, Plant, or Both
Analogy:
Boss, brain

14. Mitochondria Function: Provides energy for the cell; the powerhouse
Animal, Plant, or Both
Analogy:
power plant
“Mighty” Chondria

15. Ribosomes Function: Makes proteins
Found on Rough ER & floating throughout the cell
Animal, Plant, or Both
Analogy:
construction worker

16. Endoplasmic Reticulum
Function:
Moves materials around the cell
Rough ER: has ribosomes
Smooth ER: no ribosomes
Animal, Plant, or Both
Analogy:
conveyor belt, hallway, highway

17. Golgi Bodies/Apparatus
Function:
Wraps or packages proteins before they can leave the cell.
Animal, Plant, or Both
Analogy:
Post Office

18. Lysosomes
Function:
Digests enzymes & transports waste material to cell membrane for removal
Animal, Plant, or Both
Analogy:
Garbage Man

19. Centrioles Function: Paired organelle that helps with cell division
Animal, Plant, or Both
Analogy:
Math teacher (can divide and multiply)

20. Central Vacuole Function:
Stores food, water, and waste, keeps cell’s shape
Animal, Plant, or Both
Analogy:
Refrigerator

21. Chloroplasts Function:
Makes plant’s food called glucose (photosynthesis) Gives plants green color
Animal, Plant, or Both
Analogy:
Chef