1. 19.2 Animal-like Protists Updates: –3.5 unit guide questions due Homework: –reading 12.4 –Case study due Thursday Unit 3 test Friday

2. 19.2 Animal-like Protists LEQ: How does the endomembrane system allow the cell to perform its functions? Activator: transport/4-corners Whats the most important thing about: –Simple diffusion –Facilitated diffusion –Active transport (pumping) –Bulk transport/vesicles Key terms – endomembrane system,

3. 19.2 Animal-like Protists Eukaryotic cells have an internal structure. The cytoskeleton is a protein network that has many functions: –supports and shapes cell membranes –aids in cell movement

4. 19.2 Animal-like Protists The nuclear envelope is a double membrane –Nuclear pores allow signals, RNA, special proteins entry –Function: protects DNA and manages its use (expression) and copying (replication) The nucleus has several functions related to DNA

5. 19.2 Animal-like Protists Function: ribosome production –build ribosomes from RNA & proteins –exit through nuclear pores to cytoplasm & combine to form functional ribosomes The nucleolus produces ribosomes

6. 19.2 Animal-like Protists Updates: –3.5 unit guide questions due Homework: –reading 12.4 –Case study due Thursday Unit 3 test Friday

7. 19.2 Animal-like Protists LEQ: How does the endomembrane system allow the cell to perform its functions? Activator: transport/4-corners Whats the most important thing about: –Simple diffusion –Facilitated diffusion –Active transport (pumping) –Bulk transport/vesicles Key terms – endomembrane system,

8. 19.2 Animal-like Protists small subunit large subunit Ribosomes Function –protein production Structure –RNA & protein –2 subunits combine 0.08  m Ribosomes Rough ER Smooth ER

9. 19.2 Animal-like Protists Building Proteins

10. 19.2 Animal-like Protists The endomembrane system of eukaryotes is involved in chemical reactions and the movement of products through the cell.

11. 19.2 Animal-like Protists Many processes occur in the endoplasmic reticulum (ER). –ribosomes synthesize proteins when directed by RNA Rough ER chemically modifies certain proteins Smooth ER is involved in lipid synthesis

12. 19.2 Animal-like Protists Vesicle transport within the cell occurs between membranes vesicle budding from rough ER fusion of vesicle with Golgi apparatus migrating transport vesicle protein ribosome

13. 19.2 Animal-like Protists –The Golgi apparatus processes and packages biomolecules for transit to other membrane bound organelles. –Lysosomes contain enzymes that digest cellular structures & biomolecules

14. 19.2 Animal-like Protists proteins transport vesicle Golgi apparatus vesicle smooth ER rough ER nuclear pore nucleus ribosome cell membrane protein secreted cytoplasm Proteins are transported through the endomembrane system

15. 19.2 Animal-like Protists Endomembrane system Discussion What are proteins and why do cells make them? Explain the relationship between the nucleus, ribosomes, the ER, the Golgi apparatus, and the plasma membrane How do cells transport proteins through the endomembrane system?

16. 19.2 Animal-like Protists Find someone that can tell you about: –Something that makes proteins –Something that transports chemicals –Something that makes lipids –Something a lipid is used for –Something the Golgi does –The structure that moves organelles and vesicles