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Cell Structure & Function

Cell Structure & Function. http://koning.ecsu.ctstateu.edu/cell/cell.html. Definition of Cell. A cell is the smallest unit that is capable of performing life functions. Cell Theory. All living things are made up of cells. Cells are the smallest working units of all living things.

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Cell Structure & Function

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  1. Cell Structure & Function http://koning.ecsu.ctstateu.edu/cell/cell.html

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

  3. 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.

  4. “TYPICAL” ANIMAL CELL

  5. “TYPICAL” PLANT CELL

  6. Cell Parts Organelles

  7. Surrounding the Cell

  8. CELL MEMBRANE Outer layer that controls movement of materials into and out of cell

  9. CELL WALL • Most commonly found in plant cells and bacteria • PLANT CELL • Provide Protection and Support • BACTERIA CELL

  10. Inside the Cell

  11. Nucleus • Directs cell activities • Contains genetic material – chromosomes, DNA

  12. Cytoplasm • Gel-like mixture makes up inside of cell • Holds other organelles in cell • Surrounded by cell membrane

  13. Mitochondria • Functions in energy production through chemical reactions

  14. VACUOLES • Membrane-bound sacs for storage, digestion, and waste removal • Contains water solution • Help plants maintain shape

  15. CHLOROPLAST • Usually found in plant cells • Contains green chlorophyll • Where photosynthesis takes place

  16. Chloroplast Found in Autotrophs • Autotrophic organisms make their own food

  17. He’s Green. Is he an Autotroph?

  18. HETEROTROPHS • Organisms that do not make their own food • Rely on other organisms

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

  20. Two Types of Cells Prokaryotic Eukaryotic

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

  22. Eukaryotic • Contain organelles surrounded by membranes • Most living organisms (you!) Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html

  23. AUGUST 30, 2013 • In you journal under the journal guidelines, write today’s date & Cell Review • Draw & label only the type of Cell

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