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HW # 49 - Work on your Cell Essay Rough draft -Due tomorrow Final Essay- Due Wednesday (12/19)

Week 14, Day Three. HW # 49 - Work on your Cell Essay Rough draft -Due tomorrow Final Essay- Due Wednesday (12/19) Warm up. Warm up Response. Homework Response/Check. D. Goals for Today. Make an outline for your essay.

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HW # 49 - Work on your Cell Essay Rough draft -Due tomorrow Final Essay- Due Wednesday (12/19)

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  1. Week 14, Day Three HW # 49- Work on your Cell Essay Rough draft -Due tomorrow Final Essay- Due Wednesday (12/19) Warm up

  2. Warm up Response

  3. Homework Response/Check D

  4. Goals for Today • Make an outline for your essay. • Be sure to have a strong thesis statement (A cell is like a(n) ______________. And supporting details. • Be sure that you explain the roll of each organelle in you analogy and WHY it is so.

  5. Extra slides for information and study Cell Structure & Function http://koning.ecsu.ctstateu.edu/cell/cell.html

  6. Cell Theory • All living things are made up of cells. • Cells are the smallest working units of all living things. • All cells come from preexisting cells through cell division.

  7. Definition of Cell A cell is the smallest unit that is capable of performing life functions.

  8. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell Nerve Cell

  9. Two Types of Cells Prokaryotic Eukaryotic

  10. Prokaryotic • Do not have structures surrounded by membranes • Few internal structures • One-celled organisms, Bacteria http://library.thinkquest.org/C004535/prokaryotic_cells.html

  11. Eukaryotic • Contain organelles surrounded by membranes • Most living organisms Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html

  12. “Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif

  13. “Typical” Plant Cell http://waynesword.palomar.edu/images/plant3.gif

  14. Cell Parts Organelles

  15. Surrounding the Cell

  16. Cell Membrane • Outer membrane of cell that controls movement in and out of the cell • Double layer http://library.thinkquest.org/12413/structures.html

  17. Cell Wall • Most commonly found in plant cells & bacteria • Supports & protects cells http://library.thinkquest.org/12413/structures.html

  18. Inside the Cell

  19. Nucleus • Directs cell activities • Separated from cytoplasm by nuclear membrane • Contains genetic material - DNA

  20. Nuclear Membrane • Surrounds nucleus • Made of two layers • Openings allow material to enter and leave nucleus http://library.thinkquest.org/12413/structures.html

  21. Chromosomes • In nucleus • Made of DNA • Contain instructions for traits & characteristics http://library.thinkquest.org/12413/structures.html

  22. Nucleolus • Inside nucleus • Contains RNA to build proteins http://library.thinkquest.org/12413/structures.html

  23. Cytoplasm • Gel-like mixture • Surrounded by cell membrane • Contains hereditary material

  24. Endoplasmic Reticulum • Moves materials around in cell • Smooth type: lacks ribosomes • Rough type (pictured): ribosomes embedded in surface http://library.thinkquest.org/12413/structures.html

  25. Ribosomes • Each cell contains thousands • Make proteins • Found on ribosomes & floating throughout the cell http://library.thinkquest.org/12413/structures.html

  26. Mitochondria • Produces energy through chemical reactions – breaking down fats & carbohydrates • Controls level of water and other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html

  27. Golgi Bodies • Protein 'packaging plant' • Move materials within the cell • Move materials out of the cell http://library.thinkquest.org/12413/structures.html

  28. Lysosome • Digestive 'plant' for proteins, fats, and carbohydrates • Transports undigested material to cell membrane for removal • Cell breaks down if lysosome explodes http://library.thinkquest.org/12413/structures.html

  29. Vacuoles • Membrane-bound sacs for storage, digestion, and waste removal • Contains water solution • Help plants maintain shape http://library.thinkquest.org/12413/structures.html

  30. Chloroplast • Usually found in plant cells • Contains green chlorophyll • Where photosynthesis takes place http://library.thinkquest.org/12413/structures.html

  31. Quick Review • Which organelle is the control center of the cell? Nucleus • Which organelle holds the cell together? Cell membrane • Which organelles are not found in animal cells? Cell wall, central vacuole, chloroplasts • Which organelle helps plant cells make food? Chloroplasts • What does E.R. stand for? Endoplasmic reticulum http://www.youtube.com/watch?v=rABKB5aS2Zg&NR=1

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