1. How does a cell become an organism?

2. Today, you will learn…
That cells of similar structures are organized into tissues
That several tissues may make up an organ
That organs are organized into systems
To explain the significance of division of labor

3. Let’s discuss: What are the main functions of a cell?
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What are the main functions of an organism?
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4. Unicellular Organisms

5. Unicellular Organisms
Paramecium
__________________organism
Found on ______________ (ex. Pond, river)
Has _______ surrounding the body for __________________
Has a ________________
Can/does it perform all functions it needs to stay alive?

6. Unicellular Organisms
Amoeba
Often found at ________ of ponds or under rocks
Does not move fast
No arms, legs, eyes, mouth
Eats by ________________________________________________
Lives only for _____________
Reproduce by ______________________________________________________________________________

7. Multicellular Organisms
Have _______________________________
Different cells perform different ___________
Examples
___________________
Leaf cells

8. Cells in a Human Examples _____________________ (transports oxygen)
_____________________ (have nerve fibers to transmit signals to and from the central nervous system)

9. Cells in a Plant Examples
_____________________ (absorbs water from the ground)
_____________________ (allows air to enter the leaf)

10. From cells to tissues Tissue
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11. Tissues in a human ________________ tissue
_________________ tissue to _________ structure beneath it
______ body parts together
_______ or ___________ all parts of an organism

12. Tissues in a human ______________ tissue Cause _______________
Carry _____________ from one part of body to another by ________________________________________

13. Tissues in a plant _______________ tissue
Protects plant against injury and losing too much water
Transports materials within a plant

14. Tissues in a plant ________________________ tissue
Carries out photosynthesis in a plant

15. From tissues to organs Organs
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16. Organs in a human
Examples
_______________

17. Organs in a plant
Examples
_______________

18. From organs to systems Systems
___________________________________________________________________________________________________________________________

19. Main organ systems in a human
_______________ l system

20. The Human Body

21. Division of Labor
Each cell in a multicellular organism ________ perform ________ of the bodily functions
Each type of cell ___________ in performing ______ particular _______________________
__________________ functions in a multicellular organism can be performed __________________ by _________________

22. Division of Labor Division of labor
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