1. Do Now: 1.How do you figure out total magnification? 2.What is a negative feedback mechanism? 3.What is metabolism?

2. DO NOW 1.How do you create a wet mount? How would you add a stain/dye? 2.Explain what to do going from low to high power. What happens to your field of view?

3. DO NOW QUIZZ!! -10 minutes (so clear your desks) -Just put name and period -Write clearly or it can’t be graded GOOD LUCK!! Take “Cell” note packet when done Lp 6.1

4. Do Now “B”…Page 10 Lp 6.1

5. Cells Cells, Levels of Organization, Cell Theory, Plant Cell, Animal Cell, Organelles, Types of Organelles

6. Cells What are they? What is LIFE made of?

7. What is a Cell? Living things might be made up of billions or trillions of cells. These are multicellular organisms. A living thing may be made up of one cell, like this unicellular Amoeba.

8. 1.New cells arise from other living cells 2.All life is made of one or more cells – Because every cell carries out life functions 3.Cells are the basic unit of structure and function in living things The Cell Theory What Exactly are Cells

9. Cell Theory Video https://www.youtube.com/watch?v=dscY_2Q QbKU 3 https://www.youtube.com/watch?v=dscY_2Q QbKU Who came up with the term cell? What was he looking at under his microscope? https://www.youtube.com/watch?v=4OpBylw H9DU 6 https://www.youtube.com/watch?v=4OpBylw H9DU

10. Exceptions to the Cell Theory 1.Viruses are not cells – They contain genetic material – But they need another cell to inject their genetic material into in order to reproduce 2.The first cell could not have come from a previously existing cell Mitochondria and Chloroplasts are cell organelles that contain their own genetic material. They can reproduce independently of the cell

11. Cells are the basic unit of structure and function in living things You are completely made up of cells – According to National Geographic, you are made up of about 37.2 trillion cells (not counting microbes)!! Cells are the smallest living structure that carries out life processes Cells come together to make more complex structures… Organelles → Cells → Tissues → Organs → Organ systems → Organisms

13. How Big is a Cell Compared to Atoms, Tissues and Organs? Lp 6.2

14. Levels of Organization Atom Molecule – Two or more atoms together Organelle – Organs of the cell that carry out Life Functions Cell – Basic unit of life Tissue —Collection of similar cells Organ —Collection of tissues joined to serve a common function Organ System —Group of organs that work together to perform a certain task Organism

18. DO NOW page 11 # 1- 4,17,18

19. Construct a Hierarchy of Organization page 14 Cell Organ Molecule Atom Organism Tissue Organelle Organ System

20. Recap What is the Cell Theory? What are some exceptions?

21. Ok, We know how organelles, cells, tissues and organs are organized…. But what is all that stuff in cells that we mentioned? ORGANELLES

22. Do Now #20… page 9 1.What is the approximate size of these cells? 2.What is the smallest unit of life? Why ? EXTRA - What would you do to center this image ?  A B Lp 6.3

23. So what are Organelles? Scientists observed many small structures located inside the cell called “ORGANELLES” – Organelles literally means “Little Organs”

24. So what are Organelles? Organelles perform all the life functions that keep the cell alive – Just like our organs perform our life functions keeping us alive We are many cells put together. So we share the same needs as cells. – Cells need food, water, oxygen, waste removal, energy, transport… – We need food, water, oxygen, waste removal, energy, transport…

25. Lets look at Organelles!

26. First there are 2 major Types of Cells 1.Animal Cell 2.Plant Cell http://www.cellsalive.com/cells/cell_model.htm

27. Do plant and animal cells have differences?

28. Cell Organelles carry out Life Functions

29. The Nucleus The Director tells everyone on a movie set what to do The nucleus is the command center – Nucleus directs the synthesis of proteins in the cell – Contains DNA (Genetic Material) – Nucleolus – nuclear organelle that makes ribosomes

30. The Mighty Mitochondria Power house of cell Site of cellular respiration Where ATP (energy) is produced I need energy to run a marathon! I need energy to life all this weight!

31. Ribosomes Protein factory Site of protein synthesis – Examples: hormones, neurotransmitters, cell receptors

32. Vacuole Vacuole = stores various materials such as water, wastes and food What do you notice about plant vacuoles? Animal Vacuole Plant Cell Vacuole

33. Centrioles ONLY in ANIMAL CELLS Play a part in cell division Cylinder shaped

34. Chloroplasts Chloroplasts are found ONLY in PLANT CELLS Site of Photosynthesis This is where glucose (food) is made! If you look at chloroplasts up close, they look like they have stacks of pancakes in them

35. Do Now 1.What is the field of view in mm and in um? 2.What would the Amoeba look like under high power? Lp 6.3

36. Cell Wall Rigid structure found ONLY in PLANT CELLS Gives plant cell their shape and used for protection Plant cells have BOTH a plasma membrane and cell wall Cell Wall Close Up

38. Cell Membrane: Plasma Membrane Selective Permeability: – Allows certain material to pass through the cell membrane only – In BOTH PLANT and ANIMAL cells

39. Lysosome Contains digestive enzymes Breaks down cellular garbage – food vacuoles – waste vacuoles – damaged organelles

40. Golgi Apparatus Warehouse of the cell (like the UPS) – Flattened membrane sacks that package, store and release molecules to the outside of a cell

41. Endoplasmic Reticulum Used to transport materials throughout the cell Rough Endoplasmic Reticulum - has ribosomes attached to its surface Smooth Endoplasmic Reticulum – no ribosomes attached to its surface Synthesizes material for inside the cell & cell membrane

42. Cytoplasm Jelly-like substance that fills most of the cell, Mostly made of water Where many cellular reactions occur The “medium” or fluid between the plasma membrane and the nucleus *Extra: Aides / Helps with TRANSPORT of materials

43. Let’s Compare Animal to Plant Cells Animal CellsPlant Cells

44. Label the parts of the animal cell

45. Label the parts of the plant cell

46. Cell Organelle - Function - Life Function https://www.youtube.com/watch?v=URUJD5NEXC8https://www.youtube.com/watch?v=URUJD5NEXC8 Cell overview video

47. Does Every Cell Have Organelles? NO

48. Cell Categories

49. Prokaryotic Cells Pro = before karyon = nucleus Earliest type of cell NO membrane bound NUCLEUS NO membrane bound ORGANELLES Relatively small ( 5 to 10 um) Include all bacteria

50. Eukaryotic Cells Eu = “True” Karyon = “Nucleus” HAS membrane bound NUCLEUS HAS membrane bound ORGANELLES Includes all plants, animals, fungi

51. Prokaryotic vs. Eukaryotic Cells

52. Check Point What is a cell? Cell Theory: Levels of organization: What is an organelle? Do all cells have organelles? Two major types of cells: