1. 10/23 & 10/24 - 7 th Grade Agenda Learning Objective: Learn about Organelles Collect: HW: Reading & Note Taking p. 53 - 56 Who wants to be a Millionaire Chap 2 Chap 2 Test Video: Science in Action “Cells” Class Reading p.88-89 HW: Reading & Note Taking p. 57 - 60 Reminder: HW: Cell Model due 11/8 & 11/9 (40 Points)

2. Reflection Write 3 questions that you have about Cells. (Write in complete sentences)

3. The basic unit of structure and function in living things is called C_____ ells

4. The invention of the mi_______ made it possible for people to discover and learn about cells croscope

5. In 1663 Robert Hooke observed the structure of thin slice of c____ using com________ microscope ork pound Drawing of dead cork cells by Hooke

6. Microscopes Magnification: How la______ an image can appear. Resolution: How sh______ an image can appear rge arp

7. Which image has higher resolution? A B

8. Which image has higher magnification? A B

9. What is the total magnification of the microscope? 10X 20X 10 X 20 = 200

10. What is the total magnification of the microscope? 10X 15X 10 X 15 = 150

11. Grain of Pollen Optical Microscope Scanning Electron Microscope

12. More Electron Microscope Images

13. Head of a Mosquito 200 X 1000 X

14. Guess what this is? Toilet Paper Magnified 500X

15. Real pictures of silicon atoms What was the magnifications? 1,000,000 X

16. Cell Theory: All l______ things are composed of cells iving

17. Cell Theory: Cells are the basic unit of str______ and f________ in living things ucture unction

18. Cell Theory: All cells are pr_______ from other cells oduced

19. A tiny cell structure that carries out specific function within the cell is called _____________ Organelle

20. The _________ is a rigid layer of nonliving material that surrounds the cells of plants and some other organisms Cell Wall

21. The ____________ controls what substance come into and out of a cell Cell Membrane Cell’s Doorway

22. The ____________ is the cell’s control center, directing all of the cell’s activities Nucleus Brains of the Cells

23. The _____________ are called the powerhouses of the cell because they produce most of the energy the cell needs to carry out its functions Mitochondria Powerhouse

24. The _________________ are passageways that carry proteins and other materials from one part of the cell to another. Endoplasmic Reticulum Freeway of the Cells

25. The ________ are small grain like bodies which are attached to the outer surface of the endoplasmic reticulum. that act like factories to produce proteins Ribosomes Protein Factory

26. The ___________ can be thought of as the cell’s mailroom. It receive proteins from endoplasmic reticulum and distribute them to other parts of the cell. Golgi Bodies Mailroom

27. The __________ are only found in plants. It capture energy from sunlight and use it to produce food for the cell. Chloroplasts Solar Cells

28. The ________ are water filled sac floating in the cytoplasm. It act as the storage area of the cell. Vacuoles Storage Area

29. The ________ are small round structures that contain chemicals that break down large food particles into smaller ones Lysosomes Cell’s Cleaner