unit 3 pp #7

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  • 1.The Cell

2. Outline

  • Cell Structure
    • Prokaryote vs. Eukaryote
    • Plant vs. Animal
    • Organelles, structure and function
  • Movement through the Cell
    • Cell membrane
    • Passive transport
      • Osmosis
      • Diffusion
    • Active transport
      • Endocytosis
      • Exocytosis
  • Types of Cells

3. The Cell Theory

  • All living things are composed of cells.
  • Cells are the basic unit ofstructureandfunctionin living things.
  • New cells are produced from existing cells.

4. Cells

  • Unicellular organism made up of only 1 cell

5. Cells

  • Multicellular organism made up of more than 1 cell

6. Cells

  • Unicellular or multicellular?

7. Cells

  • Unicellular or multicellular?

8. Cells

  • Unicellular or multicellular?

9. Cells

  • All cells contain:
    • Cytoplasm
    • Cell membrane
    • Ribosomes
    • Genetic information (DNA)

10. Cells

  • Types :
    • Prokaryote
    • Eukaryote
      • Animal cells
      • Plant cells

11. 12. 13. 14. Prokaryote Cells

  • Cells missing a nucleus andorganelles.
  • DNA is a single circle ( plasmid ).
  • Allbacteriaare prokaryotes.
  • All prokaryotes areunicellular .

15. Prokaryote 16. Eukaryote

  • Cells have a nucleus and organelles.
  • Eukaryotes maybeunicellularormulticellular
  • Two types:
    • Animal cells
    • Plant cells

17. Eukaryote 18. Animal Cells

  • Eukaryotic cell that does not contain a:
    • cell wall
    • large vacuole
    • Chloroplasts
  • DoesNOTphotosynthesize.

19. Animal Cells 20. Plant Cells

  • Eukaryotic cell that contains:
    • large vacuole
    • Cell wall
    • chloroplasts
  • Photosynthesizes.

21. Plant Cells 22. Cell Parts

  • Cytoplasm
    • Found in all cells.
    • Semi-liquid medium that makes up the most of the cell.
    • Contains enzymes & nutrients that help reactions occur.

23. Cell Parts

  • Cell Membrane
    • Structure surrounding all cells.
    • Controls what molecules may enter and/or exit the cell.

24. Cell Parts

  • Ribosomes
    • Found in all cells.
    • Produces proteins.

25. Cell Parts

  • DNA
    • Found in all cells.
    • Contains the genetic information required for life.
    • 1 circular strand in prokaryotes.
    • Many linear (double helix) strands in eukaryotes.

26. Cell Parts

  • Nucleus
    • Found in all eukaryotes.
    • Membrane bound structure that contains DNA.

27. 28. Cell Parts

  • Endoplasmic Reticulum (ER)
    • Found in all eukaryotes.
    • Passageway in which proteins travel after being produced by ribosomes.
    • Produces new membranes.

29. Cell Parts

  • Golgi Apparatus
    • Found in all eukaryotes.
    • Packaging center for proteins and other cell products leaving the cell.

30. Cell Parts

  • Lysosome
    • Found in animal cells.
    • Digests food molecules.
    • Destroys worn-out cell parts.
    • May destroy the cell.
    • Suicide sac.

31. Cell Parts

  • Mitochondria
    • Found in all eukaryotes.
    • Site of respiration.

32. Cell Parts

  • Chloroplast
    • Found only in plant cells.
    • Site of photosynthesis.
    • Contains the pigment chlorophyll.
    • Appears green

33. Cell Parts

  • Vacuole
    • Found in all eukaryotes.
      • Very large in plant cells.
      • Small organelles in animal cells.
    • Storage area for water and nutrients.

34. Cell Parts

  • Cell Wall
    • Found only in plant cells.
    • Adds structure and support to the cell.

35. Movement of the Cell

  • Flagella
    • Whip-like tail used to move the cell.

36. Movement of the Cell

  • Cilia
    • Small, hair-like projections surrounding the cell.Used to move the cell.