Aug. 24(plant vs. animal cells)

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Transcript of Aug. 24(plant vs. animal cells)

  • 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. Todays 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 wallsare also foundin prokaryotic cells .

10. Cell wall 11. Chloroplasts

  • Definition:
    • Are organelles that have adouble membraneandstacks 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:Centriolesare also foundin 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

  • Im a real powerhouse
  • Thats plain to see
  • I break down food
  • To release energy
  • What am I? ______________________

20. Question 2

  • Im strong and stiff
  • Getting through me is tough
  • Im found only in plants
  • But I guess thats enough
  • What am I? _____________________

21. Question 3

  • Im 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,
  • Im green as can be
  • I make food for the plant
  • Using the suns energy
  • What am I? ______________________

23. Question 5

  • Im a series of tubes
  • Found throughout the cell
  • I transport proteins
  • And other things as well
  • What am I? ___________________

24. Question 6

  • Im 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 Im quite small
  • You can find me in the cytoplasm
  • Or attached to E.R.s wall
  • What am I? ______________________

26. Question 8

  • Ive been called a storage tank
  • By those with little taste
  • Im 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? ______________________