1. Cell Organelles

2. What is an organelle?
Organelle – “little organs”; specialized structure that performs important cellular functions w/in eukaryotic cell
ONLY FOUND IN EUKARYOTIC CELLS

3. Cell Membrane
Regulates what goes in and out of the cell

4. Cytoplasm
Liquid substance that contains organelles

5. 1. Nucleus Directs/controls most cell functions; contains DNA
Made of 3 parts:
Nuclear Membrane (envelope)
Chromatin
Nucleolus

6. Nucleus
NUCLEUS

7. Nucleus cont’d
Nuclear Membrane - double membrane surrounding the nucleus; has pores regulates what comes in and out of cell
Nuclear pores- holes in nuclear membrane
Nucleolus - small dense region where ribosome assembly begins – stores extra ribosomes parts
Chromatin - loose form of DNA

8. 3. Endoplasmic Reticulum
Location where lipid components of cell membrane are assembled & proteins are modified ( transport system)
2 types:
Rough ER - contain ribosomes for making proteins to be exported from the cell
Smooth ER – (no ribosomes) contain enzymes that assemble membrane lipids

9. Endoplasmic Reticulum
SMOOTH
E R
ROUGH
E R

10. 2. Ribosome
Location where proteins are assembled (produced)
RIBOSOMES

11. 7. Mitochondria Site of cellular respiration (provides energy)
Power house of the cell, provides energy
MITOCHONDRIA

12. 4. Golgi Apparatus
Sorts & packages proteins for storage or export and repairs ER
GOLGI APPARATUS

13. 6. Vacuoles
Store materials (waste, water, nutrients)
VACUOLE

14. 9. Centrioles
(animal cells) organize cell division
CENTRIOLES

15. 5. Lysosome
(animal) Filled w/ enzymes to break down food into molecules cells can use; also clean-up & “eat” old cell parts: suicide sac
LYSOSOME

16. 10. Chloroplast (plants & some protist) site of photosynthesis
Traps sunlight to make sugar
CHLOROPLAST

17. 11. Cell Wall
(all cells except animal cells) supports, protects, and gives shape to cell
CELL WALL

18. What do you think this is ??
8. Cytoskeleton
Protein filaments that help the cell maintain its shape
CELL MEMBRANE
CYTOSKELETON
What do you think this is ??

19. Journey into a Cell

20. Flagella
Pilli