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Aug. 24(plant vs. animal cells)

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  • 1. Biology I Mr. Nettles
  • 2. Agenda- Wednesday, August 24, 2011
    • Warm Up – 5 min
    • Review Activity – 10 min
    • Daily Lesson – 20 min
    • Wrap Up (in teams) – 10 min
    • Begin Homework – 15 min
  • 3. Today’s Objectives
    • I will define the words: vacuole, cell wall, chloroplast, and centriole.
    • I will define and describe the primary organelles of eukaryotic cells.
    • I will articulate the differences between plant and animal cells.
  • 4. Warm-Up
    • Define organelle.
    • Identify two differences between the ER and the Golgi apparatus.
    • Which organelle is responsible for breaking down dying organelles and food particles within cells?
  • 5. Review : Come up with a school-related analogy for the different parts of the cell
    • Nucleus - Central Office
    • Nucleolus - Guidance Office
    • Cytoplasm - ?
    • Cell membrane - ?
    • Ribosome - ?
    • Endoplasmic Reticulum - ?
    • Golgi apparatus - ?
    • Mitochondria - ?
    • Lysosomes - ?
  • 6. Plant Cells vs. Animal Cells
  • 7. Vacuoles (what they both have)
    • Definition :
      • fluid-filled sac
        • Small in animal cells
        • Large in plant cells
    • Function :
      • Used to store materials needed by the cell like water, food and enzymes
        • Supports heavy structures like leaves and flowers in plants
  • 8. Organelles found ONLY in Plants: Cell Walls Chloroplasts
  • 9. Cell Wall
    • Definition :
      • A rigid layer that surrounds the cell membrane
    • Function :
      • To provide support and protection for the cell
        • The cell walls of multiple cells can attach to one another to support the organism
        • Cell walls are made of different materials depending on the organism
    • *Note: Cell walls are also found in prokaryotic cells .
  • 10. Cell wall
  • 11. Chloroplasts
    • Definition:
      • Are organelles that have a double membrane and stacks of disc-like shapes containing chlorophyll
    • Function :
      • Use energy from the sunlight to make food for the cell through the process of photosynthesis
        • Chlorophyll gives plants their green color
        • Like mitochondria because it provides energy
  • 12. Chloroplast
  • 13. PLANT CELL Cell wall Large vacuole Chloroplast
  • 14. Organelle found ONLY in Animals: Centrioles
  • 15. Centrioles
    • Definition:
      • Are barrel-shaped organelles composed mostly of microtubules
    • Function :
      • Organize and transfer chromosomes and other organelles during Meiosis and Mitosis
      • Serve as the construction point for cellular microtubules
    • *Note: Centrioles are also found in some prokaryotic cells .
  • 16. Centriole
  • 17. Small vacuole Centriole
  • 18. Wrap-Up
    • Get in teams of two or three people.
    • Take out a sheet of paper to write your answers.
    • In the questions that follow, your team needs to “Name that Organelle”.
  • 19. Question 1
    • I’m a real “powerhouse”
    • That’s plain to see
    • I break down food
    • To release energy
    • What am I? ______________________
  • 20. Question 2
    • I’m strong and stiff
    • Getting through me is tough
    • I’m found only in plants
    • But I guess that’s enough
    • What am I? _____________________
  • 21. Question 3
    • I’m the brain of the cell
    • Or so they say
    • I regulate cell activities
    • From day to day
    • What am I? ____________________
  • 22. Question 4
    • Found only in plant cells,
    • I’m green as can be
    • I make food for the plant
    • Using the sun’s energy
    • What am I? ______________________
  • 23. Question 5
    • I’m a series of tubes
    • Found throughout the cell
    • I transport proteins
    • And other things as well
    • What am I? ___________________
  • 24. Question 6
    • I’m full of holes
    • Flexible and thin
    • I control what gets out
    • And what comes in
    • What am I? _________________
  • 25. Question 7
    • Proteins are made here
    • Even though I’m quite small
    • You can find me in the cytoplasm
    • Or attached to E.R.’s wall
    • What am I? ______________________
  • 26. Question 8
    • I’ve been called a “storage tank”
    • By those with little taste
    • I’m a sac filled with water
    • Food, enzymes, or waste
    • What am I? ______________________
  • 27. Question 9
    • Since I contain many enzymes,
    • I can digest an injured cell;
    • And can break down a large molecule
    • Into a smaller one as well
    • What am I? ______________________