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Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
Cell presentation
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Cell presentation

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  • 1. Cells- The Basic Unit of Life Presented By: Mrs. Nelson
  • 2. Cell Theory  All living things are made of cells. Unicellular: single cell ex) bacteria, protists Multicellular: many cells ex) animals and plants  Cells are the smallest working units of living things.  All cells come from pre-existing cells.
  • 3. Prokaryotic vs. Eukaryotic  Small  No membrane bound organelles  No nucleus  Non-specialized  Independent  Large  Membrane bound organelles  Nucleus  Specialized  Dependent
  • 4.  Explains the origin of eukaryotic cells.  What is the main difference between prokaryotic and eukaryotic?  Simple  Complex (prokaryotic  eukaryotic)  Chloroplast/Mitochondria have own DNA  Scientists suggest that this means these organelles were once lived independently outside of cells
  • 5. Controls what enters and exits cell Semi-permeable Also known as phospholipid bilayer
  • 6. phosphorus lipid hydrophylic hydrophobic
  • 7. Cell Membrane Structure markerReceptor Channel
  • 8.  Allows cells to talk to one another  Important for multicellular organisms  Cells send “messages” to one another  Messages = hormones Ex.) Histamine
  • 9. Gives your cells “identity” = id card Distinguishes your cells from other cells Immune system
  • 10. Allows molecules to pass through the membrane
  • 11. The Cell Factory  The cell is like factory…  Factories produce something…  Cells produce proteins…  Different cells produce different proteins…  People / machines perform functions in a factory.  “Organelles” in cell work together to make the protein.
  • 12. Cell Membrane Door to the factory. Controls what enters/exits the cell.
  • 13. Cytoplasm Jellylike substance where the organelles found…
  • 14. The Nucleus  “Control Center” – in charge of all the cells activities  Contains the DNA or chromosomes  DNA is instructions for cell to build proteins  Nucleolus- makes ribosomes
  • 15. Mitochondria “Generator of the cell” Supplies cell with energy Change food energy into energy cell can use (ATP- gasoline)
  • 16. Chloroplast  “Power Station”  Found only autotrophic organisms  Contain pigment chlorophyll  Trap sunlight convert it into energy
  • 17. Ribosomes  “Assembly line workers”  Proteins built
  • 18. Endoplasmic Reticulum  “Highway” system  Materials can travel on it throughout the cell  Rough ER vs. Smooth ER
  • 19. Golgi Apparatus  “Packaging Center”  Collects, modifies, packages proteins and other molecules made in the cell
  • 20. Lysosomes “Recycling Center” Engulfs damaged cell parts
  • 21. Centrioles “Reproductive Structures” – organize cell division. Always in pairs and found only in animals cells.
  • 22. Vacuoles “Storage Areas” Store materials such as: water, wastes, and nutrients
  • 23. Animal Cell
  • 24. Plant Cells
  • 25. Contrast  Plant Cells  Cell wall and cell membrane  chloroplast and mitochondria  LARGE Central vacuole  NO- centrioles  “square” shape  Animal Cells  cell membrane ONLY  mitochondria  two more small vacuoles  centrioles  “round” shape
  • 26. Human Cheek Cell (Animal cell)
  • 27. Elodea Cell (Plant Cell)

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