1. Cell Structures and Functions Chapter 3 pp62-72

2. Learning Target: Identify the parts of a cell and know the function of each structure (knowledge) Tip for success: Pay attention and take good notes.

4. Cell Membrane Anatomy  Soft and flexible  Self repairing  Phospholipid bilayer  Protein channels  Markers Physiology  Selectively permeable  Allows cells to interact and adhere to each other

5. Cytosol Anatomy  Gel-like material Physiology Suspends organelles

6. Nucleus Anatomy  Spherical  Surrounded by membrane with pores  Contains nucleolus (rRNA) and chromatin (DNA and protein) Physiology  stores genetic information that determines the function of the cell  site of ribosome formation

7. Organelles Anatomy  Specialized structures Physiology  Perform various functions

8. Learning Target: Explain how variations in cell shape and structure allow for variations in cell function. (reasoning)

9. Size measured in micrometers 1/1,000,000m or 1/10,000 cm most human cells are 10-30 µm egg cell 35 µm sperm 3 µm Why the difference in size?

10. Shape Elongated Biconcave Irregular Tendrils Flat Function Contract Carry oxygen Engulf Send messages Protection

11. What shape are these cells? Nerve cell white blood cell Red Blood cells layered epithelial cells skeletal muscle cells TendrilsIrregular Biconcave Flat Elongated

12. Complete Homework worksheet Work on Outline – Chapter 3 pp 62-72 due Friday.

13. To Do Click on your anatomy and physiology icon Open 2.09 Cell structures and functions presentation Open in “Power Point" Select Play Make an effort to determine the correct answer before revealing it. Label the diagram and then match the function on the back.