Contain digestive enzymes Found: Animal cells Jobs: 1) Autolysis: Destroy dying cell

2. Lysosome • Contain digestive enzymes • Found: Animal cells • Jobs: 1) Autolysis: Destroy dying cell This lysosome is destroying a mitochondrion

3. Lysosome protein • Contain digestive enzymes • Found: Animal cells • Jobs: 1) Autolysis: Destroy dying cell 2) Break down food cell i n t e p r o Lysosome (with enzymes inside)

4. Lysosome bacteria bacteria • Contain digestive enzymes • Found: Animal cells • Jobs: 1) Autolysis: Destroy dying cell 2) Break down food 3) Kill bacteria white blood cell white blood cell Lysosome (with enzymes inside)

5. Cilia & Flagella • Job: movement • Cilia = short hair-like extensions (numerous) You can now see the individual cilia There are thousands of cilia surrounding this one cell. Lets zoom in for a closer look.

6. Cilia & Flagella 1 • Job: movement • Cilia = short hair-like extensions (numerous) • Flagella = long whip-like extension (very few) 2 3 cell This cell has 3 flagella

7. Cilia & Flagella 1 • Job: movement • Cilia = short hair-like extensions (numerous) • Flagella = long whip-like extension (very few) 2 8 3 cell 4 5 6 This cell has 8 flagella 7

8. Cell Wall • Outermost layer of plant, fungi, & bacteria cells • Job: Adds support for growth • Made of tough cellulose • Hard to digest • Witnessed by Robert Hooke in 1665 Cell membrane The cell wall is all that remains in cork

9. Chloroplast • Job: Perform photosynthesis • Chlorophyll molecules absorb sunlight & convert water and CO2 into sugars • Endosymbiosis theory: (within, close, living relationship) Were once free living organisms that became parts of modern cells • Evidence: • Own DNA and ribosomes • Make proteins • Replicate chloroplast

10. Chloroplast • Job: Perform photosynthesis • Chlorophyll molecules absorb sunlight & convert water and CO2 into sugars • Endosymbiosis theory: (within, close, living relationship) Were once free living organisms that became parts of modern cells • Evidence: • Own DNA and ribosomes • Make proteins • Replicate Look for them flowing in the cytoplasm during our lab activity!

11. Endosymbiosis Chloroplast ancestor The predator cells continue to divide, splitting apart the chloroplasts Chloroplast survives and divides A large predator cell devours the chloroplast ancestor The chloroplasts continue to divide and multiply The predator cell divides, splitting apart the chloroplasts Over time, the chloroplast and larger cell become dependent on one another

12. Vacuole vacuole nucleus B A • Job: Stores food, water, waste, color pigments • Plant cells: Large central vacuole • Animal cells: Scattered smaller vacuoles chloroplast C

13. Review • Pick an organelle…any organelle. Describe its function. • Name 7 organelles that can be found within the cytoplasm. • Describe the pathway that proteins travel from creation to exportation. • List various reasons to help support the theory of endosymbiosis. • Name two organelles that plant cells have and animal cells do not. • Which organelle creates ATP energy for cells? • Which organelle converts sunlight into sugar? • Which organelle creates ribosomes? • Which organelle fuses with the cell membrane to release proteins? • Which molecule holds the information to make a protein?

14. Review Continued… 11) Identify the organelles in the figure below