1. Nucleus:
* Function: Stores and protects the cell's genetic material (DNA), and controls cellular activity.
2. Endoplasmic Reticulum (ER):
* Rough ER: Studded with ribosomes; synthesizes and modifies proteins.
* Smooth ER: Lacks ribosomes; synthesizes lipids, detoxifies drugs, and stores calcium.
3. Golgi Apparatus:
* Function: Processes and packages proteins and lipids made by the ER.
4. Ribosomes:
* Function: Sites of protein synthesis.
5. Mitochondria:
* Function: Powerhouse of the cell, responsible for ATP production through cellular respiration.
6. Lysosomes:
* Function: Break down waste materials, cellular debris, and engulfed pathogens.
7. Peroxisomes:
* Function: Detoxify harmful substances (e.g., hydrogen peroxide) and metabolize fatty acids.
8. Vacuoles:
* Function: Store water, nutrients, and waste products; provide structural support in plant cells.
9. Cytoskeleton:
* Function: Network of protein fibers that provides structural support, facilitates cell movement, and transports materials within the cell.
10. Centrioles:
* Function: Play a role in cell division, particularly in the formation of spindle fibers. (Found mainly in animal cells)
11. Cilia and Flagella:
* Function: Hair-like or whip-like structures that help with cell movement or moving fluids past the cell.
12. Plastids (in plants):
* Chloroplasts: Site of photosynthesis, converting light energy into chemical energy.
* Chromoplasts: Contain pigments that give color to fruits and flowers.
* Leucoplasts: Store starch, lipids, and proteins.
Note: The presence and specific types of organelles may vary depending on the type of eukaryotic cell (animal, plant, fungal, etc.).
This list represents the most common organelles, but there are other specialized organelles found in various cell types.