1. BELLWORK Name one function of the cell membrane. Class Answer:
Act as a barrier between the cell and it’s environment.
Maintain homeostasis.

2. Learning Goal
Understand Cell Structures and functions

3. Chapter 7.3 notes
Take out your notes from yesterday

4. What are the other parts of the membrane?
Cholesterol keeps the fatty acid tails from sticking together, keeps the membrane stable.
Carbohydrates stick out from the cell surface to help cells identify chemical signals.

5. Membrane Proteins Channel protein – always open
Transport proteins allow things to move through the plasma membrane
Channel protein – always open
Carrier protein – only open to certain substances

6. Membrane Proteins

7. CELL STRUCTURES, FUNCTIONS AND TRANSPORT

8. Animal Cells Cytoplasm The environment inside the plasma membrane
Semifluid material
Cytoskeleton
The supporting network of protein fibers that provide a framework for the cell
microfibers and microtublues

9. Animal Cell Figure 7-5 Plant and Animal Cells Cytoplasm Cell Membrane
Section 7-2
Cytoplasm
Cell Membrane
Go to Section:

10. Eukaryotic Cell Organelles and Function
Nucleus
Nickname: “The Control Center”
Function: holds the DNA
Parts:
Nucleolus: dark spot in the middle of the nucleus that makes ribosomes

11. Animal Cell Figure 7-5 Plant and Animal Cells Cytoplasm Nucleolus
Section 7-2
Cytoplasm
Nucleolus
Nucleus
Cell Membrane
Go to Section:

12. Eukaryotic Cell Organelles and Function
Ribosomes
Function: makes proteins
Found in all cells, prokaryotic and eukaryotic

13. Animal Cell Figure 7-5 Plant and Animal Cells Cytoplasm Nucleolus
Section 7-2
Cytoplasm
Nucleolus
Ribosomes
Nucleus
Cell Membrane
Go to Section:

14. Eukaryotic Cell Organelles and Function
Endoplasmic Reticulum (ER)
Nickname: “Roads”
Function: The internal delivery system of the cell, ships proteins and lipids

15. Endoplasmic Reticulum “ER”
Rough ER:
Rough appearance because it has ribosomes
Function: helps make proteins, that’s why it has ribosomes
Smooth ER:
NO ribosomes
Function: makes fats or lipids

16. Animal Cell Figure 7-5 Plant and Animal Cells Cytoplasm Nucleolus
Section 7-2
Cytoplasm
Nucleolus
Ribosomes
Nucleus
Cell Membrane
Smooth Endoplasmic Reticulum
Rough Endoplasmic Reticulum
Go to Section:

17. Eukaryotic Cell Organelles and Function
Golgi Complex
Nickname: The Mail Man
Function: packages, modifies, and transports materials to different location inside/outside of the cell
Appearance: stack of pancakes

18. Animal Cell Figure 7-5 Plant and Animal Cells Cytoplasm Ribosomes
Section 7-2
Cytoplasm
Ribosomes
Nucleolus
Nucleus
Cell Membrane
Smooth Endoplasmic Reticulum
Rough Endoplasmic Reticulum
Golgi Complex
Go to Section:

19. Eukaryotic Cell Organelles and Function
Lysosomes: circular (but bigger than ribosomes)
Nickname: “Clean-up Crews”
Function: to break down food into particles the rest of the cell can use and to destroy old organelles

20. Animal Cell Figure 7-5 Plant and Animal Cells Lysosomes Cytoplasm
Section 7-2
Cytoplasm
Nucleolus
Ribosomes
Nucleus
Cell Membrane
Smooth Endoplasmic Reticulum
Rough Endoplasmic Reticulum
Golgi Bodies
Lysosomes
Go to Section:

21. Eukaryotic Cell Organelles and Function
Mitochondria
Nickname: “The Powerhouse”
Function: Energy formation
Breaks down food to make ATP
ATP: is the major fuel for all cell activities that require energy

22. Animal Cell Figure 7-5 Plant and Animal Cells Cytoplasm Nucleolus
Section 7-2
Cytoplasm
Nucleolus
Ribosomes
Nucleus
Cell Membrane
Mitochondria
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Golgi Bodies
Lysosomes

23. Plant cells
Plant cells have some organelles that animal cells do not have

24. Eukaryotic Cell Organelles and Function
Large Vacuoles (animals may have a much smaller vacuole)
Function: stores water
This is what makes lettuce crisp
When there is no water, the plant wilts

25. Plant Cell Figure 7-5 Plant and Animal Cells Vacuole Cell Membrane
Section 7-2
Vacuole
Cell Membrane
Go to Section:

26. Eukaryotic Cell Organelles and Function
Chloroplasts
Function: traps energy from the sun to produce food for the plant cell
Green in color because of chlorophyll, which is a green pigment

27. Plant Cell Figure 7-5 Plant and Animal Cells Vacuole Chloroplasts
Section 7-2
Vacuole
Chloroplasts
Cell Membrane
Go to Section:

28. Eukaryotic Cell Organelles and Function
Cell Wall
Function: provides support and protection to the cell membrane
Found outside the cell membrane in plant cells

29. Plant Cell Figure 7-5 Plant and Animal Cells Vacuole Chloroplasts
Section 7-2
Vacuole
Chloroplasts
Cell Membrane
Cell Wall
Go to Section:

30. Plant Cell Cytoplasm Vacuole Smooth ER Ribosomes Chloroplasts
Cell Membrane
Cell Wall
Nucleolus
Golgi Bodies
Nucleus
Mitochondria
Rough ER

31. Comparing Plant and Animal Cells

32. Comparing Plant, Animal and Prokaryotic Cells
Prokaryotes