1. Cell Organelles
Eukaryotic Cells

2. Cell Parts Cells – the basic unit of life
Organelles - small structures inside a cell with specific functions.

3. Cell or Plasma Membrane
Cell membrane
Function - Regulates materials entering and exiting the cell.
Structure - Two layers of phospholipids, proteins

4. Cytoplasm
Cytoplasm
Function - All cell contents that lie between the cell membrane and the nucleus. (organelles + cytosol)
Cytosol - liquid portion/non-organelles.
Structure - made up of fluid and organelles except for nucleus

5. Nucleus Function - “Control Center.” Regulates DNA & RNA actions.
Structure - membrane bound, contains DNA

6. Nuclear Envelope
Nuclear Envelope
Function - Regulates what enters or exits the nucleus.
Structure - Double Layer of Lipids

7. Nucleolus
Nucleolus
Function - Produces RNA, which are used to make all proteins.
Structure - Inside Nucleus, separate from DNA

8. DNA – Deoxyribonucleic acid
DNA (chromatin)
Function - information on how to make proteins.
Chromatin – unorganized DNA (normal state)
Chromosomes – organized DNA (present before cell division
Structure - Made up of nucleotides, locked in the nucleus

9. Endoplasmic Reticulum
Rough ER
Smooth ER
Function - Transportation route for proteins.
Rough ER: has ribosomes
Smooth ER: no ribosomes
Structure - tubes and channels

10. Ribosomes Function: Makes proteins.
Free Ribosomes
Function: Makes proteins.
Structure: small circular organelles

11. Vacuoles & Vesicles Function - Storage for water, nutrients or waste.
Structure - small membrane-bound organelle.

12. Cytoskeleton Function - Provide support and structure for the cell.
Microfilaments
Microtubules
Function - Provide support and structure for the cell.
Microfilaments
Microtubules
Structure: Tubules

13. Centrioles (Animals Only)
Function - microtubules that help divide the cell during cell division.
Structure - Tubules

14. Cilia & Flagella
Cilia
Flagella
Flagella
Function - provides movement for the cell or objects moving by the cell.
Structure
Flagella – 1 long fiber
Cilia – many short fibers

15. Chloroplasts (Plants only)
Function: site of photosynthesis (converting sun and CO2 into sugar).
Structure: Membrane bound organelles that contain chlorophyll

16. Cell Wall (Plant cells only)
Function: Provides support for the cell and the plant.
Structure: Made of cellulose