1. 3.2 Cell Organelles Homework In the middle section of pg. 24: Draw a tree map classifying Prokaryotic cells, Eukaryotic cells, and Viruses Cells and Viruses Prokaryotic Eukaryotic Viruses

2. 3.2 Cell Organelles Draw a tree map classifying Prokaryotic cells, Eukaryotic cells, and Viruses Cells and Viruses Prokaryotic Eukaryotic Viruses No organelles DNA in cytoplasm Nucleus Organelles Multi-cellular And Single-cellular Single-cellular No nucleus DNA in nucleus DNA in protein Coat Needs a host Antibiotics do not work on them Vaccines prevent

3. 3.2 Cell Organelles On the bottom of pg 24: Compare and contrast a prokaryotic cell and a eukaryotic cell in a double bubble map.

4. 3.2 Cell Organelles Prokaryotic cells Eukaryotic cells No nucleus Has a nucleus No membrane- bound organelles Has membrane- bound organelles Cells tend to be microscopic All cells are enclosed by a membrane All cells are filled with cytoplasm. All are produced by other cells Basic unit of life Always single celled

5. 3.2 Cell Organelles KEY CONCEPT Eukaryotic cells share many similarities. Plant CellAnimal Cell Can you find some similarities????

6. 3.2 Cell Organelles Main Ideas Cells have an internal structure Several organelles are involved in making and processing proteins Other organelles have various functions Plant cells have cell walls and chloroplasts STANDARDS 1.e Students know that usable energy is captured from sunlight by chloroplasts and is stored through the synthesis of sugar from carbon dioxide 1.g Students know the role of the mitochondria in making stored chemical-bond energy available to cells by completing the breakdown of glucose to carbon dioxide 1.j Students know how eukaryotic cells are given shape and internal organization by a cytoskeleton or cell wall or both

7. 3.2 Cell Organelles Like your body, eukaryotic cells are highly organized structures.

8. 3.2 Cell Organelles Skin: receives sensory information (touch) protects Intestines: digest food Kidneys: Filter waste Bones: protect and support other organs

9. 3.2 Cell Organelles Cell membrane: receives messages from other cells Separates interior material from outside environment Selectively permeable (only certain things can move in an out) How can we compare the cell membrane to our skin?

10. 3.2 Cell Organelles The cytoskeleton is made of small protein subunits that form long threads, or fibers, that crisscross the ENTIRE cell.

11. 3.2 Cell Organelles – –provides strength – –helps position and transport organelles –assists in cell division How can we compare the Cytoskeleton to our human Skeleton? –supports and shapes cell

12. 3.2 Cell Organelles The nucleus stores genetic information or DNA (deoxyribonucleic acid).

13. 3.2 Cell Organelles protects the DNA The nucleolus is a dense region where tiny organelles essential for making proteins are assembled Nuclear envelope

14. 3.2 Cell Organelles There are two types of endoplasmic reticulum. – –rough endoplasmic reticulum Have bumps called ribosomes which link amino acids together to form proteins

15. 3.2 Cell Organelles – –smooth endoplasmic reticulum Makes lipids and performs specialized functions such as breaking down drugs and alcohol.

16. 3.2 Cell Organelles Golgi apparatus- processes, sorts, and delivers proteins to different parts of the cell Ex: like a post office

17. 3.2 Cell Organelles Vesicles transport materials from place to place within the cell. Separate chemicals from each other until they are going to be used in a chemical reaction Ex: Mailman

18. 3.2 Cell Organelles Mitochondria supply energy to the cell. –Chemical reactions take place that convert the molecules you eat into usable energy

19. 3.2 Cell Organelles Vacuoles hold materials needed by the cell such as water, food molecules, ions, and enzymes Animal cell Plant cell

20. 3.2 Cell Organelles Lysosomes contain enzymes. They defend the cell from invading bacteria and viruses.

21. 3.2 Cell Organelles Centrioles help divide DNA between splitting animal cells (mitosis and meiosis). They also form cilia (hair-like structures) and flagella (tail-like structures). *only in animal cells

22. 3.2 Cell Organelles A cell wall gives shape to the cell and provides protection. Connect together to support the entire organism. *Only in plants

23. 3.2 Cell Organelles Chloroplasts convert solar energy to chemical energy. They carry out photosynthesis *Only in plants