2. Day 1 Sec 7.1—The Discovery of Cells

3. Objectives: SWBAT: □ Distinguish between prokaryotic and eukaryotic cells. □ Identify the main ideas of the cell theory.

4. 1673- ___________________________________ a Dutch microscope maker was the first to see LIVING ORGANISMS. Anton van Leeuwenhoek

5. 1665- ______________________ used a microscope to examine a thin slice of cork, dead cells of oak bark and saw “little boxes” He called them “CELLS” because they looked like the small rooms that monks lived in called Cells Robert Hooke

6. THE CELL THEORY Cells are the basic building blocks of all living things.

7. ________  __________  ___________  ATOMS MOLECULESORGANELLES

8. ____________  CELLSTISSUES Similar cells working together

9. ___________  __________  ___________ ORGANS ORGAN SYSTEMS ORGANISM Different tissues working together Different organs working together

10. 1.All organisms are made of one or more cells. THE CELL THEORY

11. 2. Cells are the basic unit of structure, organization, and function of organisms. THE CELL THEORY

12. 3. All cells come from preexisting cells. THE CELL THEORY

13. CELL THEORY 1. All living things are ________________________. 2. Cells are the basic unit of ____________ & _____________ in an organism. (cell = basic unit of _____________) 3. Cells come from the reproduction of ____________ cells MADE OF 1 or MORE CELLS existing life STRUCTURE FUNCTION

14. The Cell Theory Fill out the cell theory chart!!!

15. All living things made of cells BUT… organisms can be very different. UNICELLULAR MULTICELLULAR

16. Insert into Notes Unicellular Multicellular Made of one cell  Example: bacteria Made of more than one cell  Example: plants and animals

17. Partner Read Prokaryotes are unicellular organisms, found in all environments. Prokaryotes are the largest group of organisms, mostly due to the vast array of bacteria which comprise the bulk of the prokaryote classification. Eukaryotes are generally more advanced than prokaryotes. There are many unicellular organisms which are eukaryotic, but all cells in multi-cellular organisms are eukaryotic. 1. Which type of cell are humans composed of? How do you know? You will have 5 minutes to answer the question on the next slide

18. Cells that do not contain internal membrane-bound structures are called prokaryotic cells. The cells of most unicellular organisms such as bacteria do not have membrane bound structures and are therefore called prokaryotes. Two Basic Cell Types

19. A prokaryotic cell does not have internal organelles surrounded by a membrane. Most of a prokaryote’s metabolism takes place in the cytoplasm. 1. Ribosomes 2. DNA 3. Plasma membrane 4. Cell wall Chapter Assessment

20. Cells that do not contain any membrane-bound organelles. Example: bacteria Prokaryotes Take Notes! Topic: Cells

22. Most of the multi-cellular plants and animals we know are made up of cells containing membrane-bound structures and are therefore called eukaryotes. Cells containing membrane-bound structures are called eukaryotic cells. Two Basic Cell Types

23. This eukaryotic cell from an animal has distinct membrane-bound organelles that allow different parts of the cell to perform different functions. 4. Plasma membrane 1. Nucleus 2. Nucleolus 3. Chromosomes 5. Organelles

24. Cells that contain membrane- bound organelles. Examples: amoebas, algae, yeast, animals, plants. Eukaryotes Take Notes! Topic: Cells

26. The membrane-bound structures within eukaryotic cells are called organelles. Each organelle has a specific function that contributes to cell survival. EUKARYOTIC CELLS

27. Human Cell Eukaryotic cells are generally one to one hundred times bigger than prokaryotic cells.

29. Eukaryotes Prokaryotes Both Fill out the diagram using your notes and the text book!!!!

30. Prokaryotes NO membrane- bound organelles cell walls most are unicellular DNA floats freely around small (.001 -.01mm) Both: cytoplasm DNA as genetic material ribosomes Cell membrane CELLS Eukaryotes nucleus & membrane-bound organelles some have cell walls most are multi- cellular large (.01 -.1mm)

31. The Cell Theory Fill out the cell theory chart!!!

32. Eukaryotes Prokaryotes Both Fill out the diagram using your notes and the text book!!!!

33. Prokaryotes NO membrane- bound organelles cell walls most are unicellular DNA floats freely around small (.001 -.01mm) Both: cytoplasm DNA as genetic material ribosomes Cell membrane CELLS Eukaryotes nucleus & membrane-bound organelles some have cell walls most are multi- cellular large (.01 -.1mm)

34. Cells

35. Day 2 Sec 7.2—The Plasma Membrane

36. MULTICELLULAR ORGANISM don’t just contain MANY CELLS. Image from: http://www.isscr.org/images/ES-cell-Fig-2.jpg They have different kinds of cells doing different jobs

37. Cells in a multi-cellular organism become SPECIALIZED by turning different genes on and off Image from: http://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpg Cell Specialization =DIFFERENTIATION

38. SPECIALIZED ANIMAL CELLS Muscle cells Red blood cells Cheek cells

39. Specialized Plant cells Guard cells Xylem cells Pollen