1. Inside Cells!

2. What do you see when you look at yourself in the mirror?
Skin, hair, eyes, teeth, muscles?

3. Let’s get a closer look….

4. Under a microscope, (on low power), your skin looks like this:

5. But upon even closer look…

6. …and that’s just your skin!
And closer still..
…and that’s just your skin!

7. ALL of you is made up of all different kinds of cells.
muscle cells
heart cells

8. brain cells

9. Under a microscope, you can see these cells.

10. Everything that is alive is made of cells.

11. THE CELL THEORY All living things are made of cells.
2. Cells are the basic unit in all living things.
3. Cells can only be produced by other cells.

12. Living things made out of just one cell are called SINGLE-CELLED ORGANISMS

13. Living things made of more than one cell are called MULTICELLULAR ORGANISMS

14. So what the heck is a cell?

15. Cells are MUCH larger, and they make up all of life.
If you remember…
Atoms and molecules make up all matter.
Cells are MUCH larger, and they make up all of life.

16. To understand how living things work, you have to know about cells.
Cells allow us to breathe, grow, get energy from our food, and even see!

17. Cells have many parts that help carry out life’s functions.

18. There are two main types of cells that we will talk about in class.

19. Let’s start with the animal cell…

20. The outer covering of an animal cell.
Cell Membrane
The outer covering of an animal cell.

21. Gives support to the cell. It holds everything in!
Cell Membrane
Gives support to the cell. It holds everything in!

22. 2. Allows food to come in and waste to go out through openings called PORES

23. Nucleus The large round(ish) mass in the cell.
Has a membrane around outside.

24. Nucleus The cell’s control center.
Directs all of the cell’s activities.
Holds the DNA for cell reproduction

25. DNA is what causes you to have the color hair, eyes, and height that you have! (and a lot of other things too)

26. Made of a thick, jello-like substance.
Cytoplasm
The “empty” space inside the cell.
Made of a thick, jello-like substance.

27. All of the ORGANELLES (tiny cell structures) float around in the cytoplasm.

28. The small organelles with an inner folded membrane.
Mitochondria
The small organelles with an inner folded membrane.

29. The “Powerhouses” of the cell.
Mitochondria
The “Powerhouses” of the cell.

30. Mitochondria
They digest sugar molecules and provide energy for the cell.
Then they give off carbon dioxide as waste.

31. Small, grain-like bodies floating in the cytoplasm.
Ribosomes
Small, grain-like bodies floating in the cytoplasm.

32. Ribosomes produce proteins…they are like little protein factories

33. Endoplasmic Reticulum
A maze of passageways in the cell.
Endoplasmic Reticulum

34. Endoplasmic Reticulum
Carries proteins and chemicals around the cell.

35. A structure of flattened sacs and tubes.
Golgi Bodies
A structure of flattened sacs and tubes.

36. Golgi Bodies
Receives proteins from the ER and SORTS and DISTRIBUTES them to all parts of the cell

37. Both nutrients and waste can be stored here.
Vacuoles
Storage organelles.
Both nutrients and waste can be stored here. ?

38. Lysosomes
The cell’s digesters.

39. They digest old cell parts and recycle the usable materials.

40. They have everything mentioned and 2 more…
Now for the plant cell…
They have everything mentioned and 2 more…

41. Able to convert sunlight into food (sugar).
Chloroplasts
Able to convert sunlight into food (sugar).

42. Cell Wall
Rigid support surrounding the cell membrane to keep the cell stiff and firm.