1. Cell Structure and Function
Chapter 4
Cell Structure and Function

2. Anton van Leeuwenhoek (1632-1723)
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A Dutch trader - Invented the first microscope
First to observe living cells
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3. __________________

4. ___________________
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5. ____
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How does a cell’s shape affect the cell’s function?

7. ________
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8. Levels of Cellular Organization
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9. The Cell Cell – Smallest, basic unit of life
Organelles – Intracellular bodies that perform specific functions for the cell.
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10. _______
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11. Cell Membrane/Plasma Membrane
Function:________________________________________________
Structure: Has a ________________ made up of proteins and lipids.

12. Cytoplasm
Cytoplasm
Function: All cell contents that lie between the cell membrane and the nucleus. (organelles + cytosol)
a. Cytosol =______________________________
Structure:___________________________________________

13. Nucleus Function:____________________________________
Structure: membrane bound, contains DNA

14. Nuclear Envelope Function:____________________________________
Structure: Double Layer of Lipids

15. Nucleolus Function:_____________________________________
Structure: Inside Nucleus, separate from DNA

16. Ribosomes Function: ______________
Free Ribosomes
Function: ______________
Structure: small circular organelles

17. Endoplasmic Reticulum
Rough ER
Smooth ER
Function: _________________________
Rough ER: ________________________
Smooth ER: _______________________
Structure: tubes and channels

18. Lysosomes Function:_____________________________________________
Structure: Small membrane-bound organelles

19. Peroxisomes
Peroxisome
Function:_________________________________________________________________________________
Structure: Small membrane-bound organelles

20. Mitochondria
Mitochondria
Function: ____________________ – site of cellular respiration. “The Powerhouse”
ATP - adenosine triphosphate
2. Structure: Double membrane-bound, kidney shaped.

21. Golgi Apparatus (Body)
Function:______________________________________
Structure: Pancake-shaped layered organelle

22. Cytoskeleton Function:_____________________________________
Microfilaments
Microtubules
Function:_____________________________________
____________
Structure: Tubules

23. Centrioles Function: microtubules that _____________________________
Structure: Tubules

24. Cilia & Flagella Function:_____________________________________
Structure:
Flagella – 1 long fiber
Cilia – many short fibers

25. Vacuoles & Vesicles Function:____________________________________
Structure: small membrane-bound organelle.

26. Plastids Function:__________________________________
Structure: Hollow sac surrounded by double membrane and contains own DNA

27. Chloroplasts Function:___________________________________________
Structure: Membrane bound organelles that contain chlorophyll

28. Cell Wall Function:______________________________________
Structure: Made of cellulose