1. Aim: How do plant & animal cell organelles maintain homeostasis?
DO NOW:
Read the “Cell Theory Rap” handout
& on loose-leaf, explain why we looked at this rap, choose 2 organelles & write down their functions.

2. Organelles “mini-workers” inside of cells that have specific jobs
Lie in the cytoplasm of both animal & plant cells (eukaryotes)

3. Nucleus Brain of the cell
Contains DNA or genetic instructions (Nucleic Acid)
Has a membrane with pores

4. Nuclear Membrane
Membrane of the nucleus
Also called nuclear envelope

5. Nucleolus
Inside nucleus
Makes ribosomes

6. Ribosomes Make proteins
Found freely in cytoplasm or attached to endoplasmic reticulum

7. Mitochondria Site of cellular respiration (chemical reaction)
ATP Energy producing organelle
Powerhouse of the cell

8. Vacuoles
Storage sacs for food or water or excess waste, that will eventually be eliminated

9. Endoplasmic Reticulum
Cellular highway
Allows for more efficient transport inside of cells
2 Types: Smooth & Rough
Rough: contains ribosomes, which make proteins
Smooth: no ribosomes

11. Golgi Bodies / Apparati
Packaging organelle for proteins (sorts, modifies & packs proteins)

12. Lysosomes Located in both animal and plant cells
Contain digestive enzymes for breakdown of wastes (Ex. damaged cells or old cell parts)

13. Centrioles Only in animal cells Look like cylinders
In pairs, near the nucleus
Involved in cell division

14. Chloroplast Only in Plant Cells
Site of Photosynthesis (chemical reaction)
Food (Glucose) Producer
Contains chlorophyll pigment (allows for absorption of sunlight)

16. Cell Membrane Barrier between inside & outside of cells
Regulates what enters & exits cells

17. Cell Wall Made of cellulose (tough carbohydrate)
Lies outside the cell membrane in plant cells and bacteria, fungal organisms and some protists
Offers Support & Protection

19. Cytoplasm
Similar function to that of the human body’s circulatory system
Site of most chemical reactions in a cell
Holds organelles in place
Mostly made of water
“gel-like” fluid that surrounds the nucleus

21. Brain-Pop Video

22. Activity

24. Homework
Castle Learning Questions on Organelles