1. Share a half sheet of paper Front of paper 1. Look at different types of cells under the microscope. Plant leaf, stem cross section, nerve cell, bacteria, paramecia 2. Draw a quick sketch of each cell and list features such as shape and internal parts. Back of paper 3. Create your own definition of a cell. 4. Put the cells into categories. Explain why you put them into those categories.

2. Response from Activity 1. How easy was it to see structures in the cells? 2. What characteristics of the slides could have caused you to make the wrong definition of a cell?

3. 7.1 1.What is the cell theory 2.What are the characteristics of prokaryotes and eukaryotes?

4. Discovering the Cell 1665 - English Scientist Robert Hooke –Observed a thin slice of cork. –Called the small compartments cells.

5. Discovering the Cell Mid 1600’s – Anton van Leeuwenhoek - observed living things in pond water

6. The Cell Theory 1. All living things are composed of cells. 2. Cells are the basic unit of structure and function. 3. All cells come from pre-existing cells.

7. Categories of cells Prokaryotic -Simple -No Nucleus Example - bacteria Eukaryotic -Complex -Has nucleus Example – plant cell

9. Go over worksheet

10. 7.2 Eukaryotic Cell Structure 1. What are the functions of the major cell organelles?

11. Organelles “Little Organs” Perform important cellular functions

12. Cytoplasm Contains cytosol (jelly) and organelles

13. Nucleus Contains DNA

14. Nucleus Nuclear Envelope 1. Full of pores Nucleolus 1. assembly of ribosome's begins here

15. Chromatin - DNA bound to proteins Chromosomes - DNA condensed during cell division http://www.youtube.com/watch?v =lUESmHDrN40

16. Ribosomes Where proteins are assembled.

17. Endoplasmic Reticulum Rough ER – Modifies proteins Smooth ER – creates membrane lipids and detoxifies drugs.

18. Golgi Apparatus Packages materials for transport or storage.

19. Lysosomes Breaks down cell waste

20. Vacuoles Cell storage

21. Mitochondria Converts food (glucose) into energy (ATP). “The powerhouse”

22. Chloroplast Captures sunlight and converts CO 2 and H 2 0 into food (glucose).

23. Cytoskeleton Provide support and movement 1.Microfilaments 2.Microtubules

24. Announcements 1. Turn Cell Drawings into bin 2. Organelle quiz tomorrow

26. Assignment Summarize the article (7 sentences) What’s the article about Key points of the article 1. 2. 3. 4. 5. 6.

27. State your point of view 6 sentences (Do not use I or you) Do you agree or disagree -Support your statement with textual references

28. President Obama http://www.youtube.com/watch?v=NvwBNzIcEN o

29. Dr. Oz http://www.youtube.com/watch?v=9NqsO3Kf-Xw

30. The Cell Membrane 1. aka – plasma membrane Function -Regulates what enters and leaves the cell.

31. Fluid Mosaic Model 1. Lipid Bilayer 2. Protein molecules – Channels and pumps 3. Carbohydrate Chains – Identify chemicals

32. Why is water important for the cell?

33. It dissolves molecules for the body to use.

34. The Cell Wall - Provides support and protection for the cell

35. Concentration The mass of the solute in a given volume of solution. Mass/volume 12g salt and 3L water

36. Diffusion Molecules of a substance move from an area of high concentration to an area of low concentration http://phschool.com/atschool/phbio/active_art/d iffusion/index.htmlhttp://phschool.com/atschool/phbio/active_art/d iffusion/index.html

37. Equilibrium When the concentration of the solute is the same throughout a system.

38. Osmosis Diffusion of water through a selectively permeable membrane. http://phschool.com/atschool/phbio/active_art/osmosis/in dex.htmlhttp://phschool.com/atschool/phbio/active_art/osmosis/in dex.html

39. Reverse Osmosis

40. Solution Concentrations Isotonic -Same Strength -Concentration is the same on both sides

41. Solution Concentrations Hypertonic -Solution outside of cell is more concentrated -Water will move out of cell

42. Hypertonic

43. Solution Concentrations Hypotonic –-Solution outside of cell is less concentrated –-Water will move into cell

44. Facilitated Diffusion Movement of specific molecules across cell membranes through protein channels

45. Active Transport Moves material across a cell membrane against a concentration difference. http://phschool.com/atschool/phbio/active_art/active_trans port/index.htmlhttp://phschool.com/atschool/phbio/active_art/active_trans port/index.html

47. Endocytosis -Taking Material into cell -Infolding of cell membrane

48. Phagocytosis -Process in which extensions of cytoplasm surround and engulf large particles and take them into the cell Pinocytosis -Process by which a cell takes in liquid from the surrounding environment

49. Exocytosis -Material Leaving the cell -Vacuole fuses with cell membrane and forces material out of cell

51. The Diversity of Life 1. Living things are made up of units called cells. 2. Living things reproduce. 3. Living things are based on a universal genetic code. 4. Living things grow and develop. 5. Living things obtain and use materials and energy. 6. Living things respond to their environment. 7. Living things maintain a stable internal environment. 8. Taken as a group, living things change over time.

52. Section 7-4 The Diversity of Life Where do the differences come from?

53. The Diversity of Life Cell specialization and the way cells work together make multicellular organisms.

54. Cell Specialization Cells through out an organism can develop in different ways to perform different tasks.

55. Unicellular Organisms A single-celled organism In terms of numbers, they dominate life on Earth.

56. Multicellular Organisms Made up of many types of cells. Depend on specialized cells working together.

57. Specialized Animal Cells Red Blood Cells

58. Specialized Plant Cells Guard Cells

59. Levels of Organization Cells – tissues – organs – organ system - organism

60. Tissue Group of similar cells that perform a particular function.

61. Organ A group of tissues that work together to perform closely related functions.

62. Organ System Group of organs that work together to perform a specific function.