1. Cell Organelles
UNIT 3
MRS. HUNT

2. ORGANELLES
“LITTLE ORGANS” – SPECIALIZED Structures in the cell that perform specific tasks

3. Control CENTER Contains DNA Chromosomes NUCLEIC Acid Nucleus
Central MEMBRANE bound organelle
Manages or CONTROLS cellular functions.
Contains the cell's GENETIC info
Directs most of the activities of the cell.
Control CENTER
Contains DNA
Chromosomes
NUCLEIC Acid

4. The Nucleus

5. Cell / Plasma Membrane
Maintains HOMEOSTASIS
GATEWAY to Cell
doorway into & out of cell
Both PLANTS & ANIMALS
Composed of:
Lipids
Proteins
_________BACK__________
Fluid Mosaic Model:
The cell is a SOLID but behaves like a LIQUID
Flexible boundary between the cell and its environment.
Allows steady supply of nutrients to come into the cell.
______BACK______
Semi-Permeable:
Some substances can enter & exit

6. Cell / Plasma Membrane

7. Cell Wall SUPPORTS & PROTECTS the Cell. Found ONLY in PLANT Cells
Located OUTSIDE the plasma membrane.
Made of CELLULOSE
Carbohydrate/Sugar

8. Mitochondria Membrane bound organelles DOUBLE Membrane
BOTH PLANT & ANIMAL cells
Transforms ENERGY for the cell
Energy in the form of ATP
Contains Own DNA, different from Nucleus
“Power House” of Cell

9. Chloroplast Captures LIGHT energy & converts it to CHEMICAL energy
Contains green pigment that gives leaves their green color - Chlorophyll
ONLY in PLANT CELLS
PHOTOSYNTHESIS
ENERGY = ATP
Double Membrane (2)
Contains Own DNA, different from Nucleus

10. Ribosome Site where cell produces PROTEIN Made of: PROTEIN RNA
Not Membrane Bound
NO MEMBRANE
Found on/in:
Endoplasmic Reticulum (Rough)
Cytoplasm

11. Vacuole Membrane bound organelle Temporary STORAGE
Stores FOOD, ENZYMES, WASTE products, & other materials
Both Animal & Plant cells.
LARGER in Plant Cells

12. CYTOPLASM Clear JELLY-LIKE fluid inside the cell
Site of numerous CHEMICAL REACTIONS
Made mostly of WATER
SUSPENDS Cell Organelles

13. Endoplasmic Reticulum (ER)
2 Types
ROUGH
SMOOTH
PREPARES Protein for Export
Rough ER & Ribosomes
SYNTHESIZES Steroids
Smooth ER
REGULATES Calcium Levels
BREAKS DOWN Toxic Substances

14. Golgi , Lysosomes, & Cytoskeleton
Golgi Apparatus
PROCESSES & PACKAGES substances produced by the cell.
Lysosomes
Digests Molecules, Old Organelles, & Foreign Substances (“LITTLE ENZYME”)
Cytoskeleton
Maintains SHAPE & SIZE network of long protein strands in Cytosol
Participates in Movement of Organelles

15. Conclusion
All the cell organelles work together to insure the cell functions properly, thus insuring the survival of the organism!