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Eukaryotic Cell Structures

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Presentation on theme: "Eukaryotic Cell Structures"— Presentation transcript:

1 Eukaryotic Cell Structures
A eukaryotic cell is like a factory. Eukaryotic Cell Structures Copyright Pearson Prentice Hall

2 Eukaryotic Cell Structures
Like any factory, a cell’s job is to produce and then “ship out” a product. The cell’s main product is protein. All of a cell’s organelles play a part in this process. Eukaryotic Cell Structures Copyright Pearson Prentice Hall

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FACTORY PART CELL PART

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What do all factories have? I know we’re supposed to talk about cells today. But first, I want to talk about factories. Has anyone here ever been inside a factory? Activate schemas. What do all factories have in common? Copyright Pearson Prentice Hall

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1. Separate work areas. All factories have interior walls that create separate work areas.

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2. A main office. All factories have a main office. The main office decides what products are made, and issues directions for making them.

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3. Machines. All factories have machines that are used to make products.

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4. An assembly line (finishing). Products that come out of machines are not yet ready to be exported. For instance, these toy cars do not yet have wheels on them. Therefore, all factories have assembly lines where products are modified (changed) as they pass down the line.

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5. A shipping and packaging department. Once a product is modified, it is ready to be exported. The shipping and packaging department wraps up the products and prepares them to be sent out.

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6. A storage area. Products that are not shipped right away are stored for later use in a storage area.

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7. A custodial staff. A custodial staff keeps everything in the factory clean and in good working order. Copyright Pearson Prentice Hall

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8. A power source. And let’s not forget - factories need power in order to keep everything running.

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9. Beams and columns. And let’s not forget - factories need power in order to keep everything running.

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10. Security. And let’s not forget - factories need power in order to keep everything running.

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FACTORY PART CELL PART 1. Separate work areas. 2. A main office. 3. Machines. 4. Assembly line (finishing). 5. Shipping/packaging. 6. Storage area. 7. Custodial staff. 8. Power source. 9. Beams and columns. 10. Security.

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1. Membrane-bound organelles. Like factories, cells have areas where different jobs are done. So, how is a cell like a factory? Both a cell and a factory have separate work areas. Golgi Apparatus nucleus

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FACTORY PART CELL PART 1. Separate work areas. 1. Membrane-bound organelles. 2. A main office. 2. A main office. 3. Machines. 3. Machines. 4. Assembly line (finishing). 4. Assembly line (finishing). 5. Shipping/packaging. 5. Shipping/packaging. 6. Storage area. 6. Storage area. 7. Custodial staff. 7. Custodial staff. 8. Power source. 8. Power source. 9. Beams and columns. 9. Beams and columns. 10. Security. 10. Security.

18 s As we learn about each membrane-bound organelle, we will label them in these diagrams: Animal Plant

19 Copyright Pearson Prentice Hall
Nucleus 2. The Nucleus Essentially, the “main office” of the cell. Copyright Pearson Prentice Hall

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FACTORY PART CELL PART 1. Separate work areas. 1. Membrane-bound organelles. 2. A main office. 2. The nucleus. 3. Machines. 3. Machines. 4. Assembly line (finishing). 4. Assembly line (finishing). 5. Shipping/packaging. 5. Shipping/packaging. 6. Storage area. 6. Storage area. 7. Custodial staff. 7. Custodial staff. 8. Power source. 8. Power source. 9. Beams and columns. 9. Beams and columns. 10. Security. 10. Security.

21 Copyright Pearson Prentice Hall
Nucleus nucleus Be sure to label it on your diagram Copyright Pearson Prentice Hall

22 Nucleus Nucleus Be sure to label it on your diagram

23 Copyright Pearson Prentice Hall
Nucleus What is the function of the nucleus? Copyright Pearson Prentice Hall

24 Nucleus “Boss” of the cell; organelle that tells the cell which proteins to make, and how to make them.

25 Copyright Pearson Prentice Hall
The nuclear membrane is dotted with pores (holes), which allow instructions to leave the nucleus. Nucleus Pores = holes. Instructions for making proteins leave and enter the nucleus through these pores. Be sure to label the nuclear envelop on your diagram. Nuclear membrane Copyright Pearson Prentice Hall

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3. Ribosomes. The “machines” of the cell.

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FACTORY PART CELL PART 1. Separate work areas. 1. Membrane-bound organelles. 2. A main office. 2. The nucleus. 3. Machines. 3. Ribosomes. 4. Assembly line (finishing). 4. Assembly line (finishing). 5. Shipping/packaging. 5. Shipping/packaging. 6. Storage area. 6. Storage area. 7. Custodial staff. 7. Custodial staff. 8. Power source. 8. Power source. 9. Beams and columns. 9. Beams and columns. 10. Security. 10. Security.

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Ribosome (free) Ribosome (attached) Ribosomes are the small dots in the diagram. They are either free or attached.

29 Nucleus Ribosome (free) Ribosome (attached)
Be sure you are labeling both the plant and animal sides of your diagram!

30 Copyright Pearson Prentice Hall
Ribosomes What is the function of ribosomes? Copyright Pearson Prentice Hall

31 Ribosomes Make protein following instructions sent by the nucleus.
Polymerize AA’s

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sSend How Organelles Work Together Eukaryotic Cell Structures Sends instructions Polymerization Nucleus Ribosome Protein

33 Proteins leaving the ribosome are not finished; they need to be folded into the correct shape.
Ribosomes Protein folding Ribosomes produce proteins, the cell’s main product. Unfinished protein Finished protein

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sSend How Organelles Work Together Eukaryotic Cell Structures Sends instructions Polymerization Nucleus Ribosome Unfinished Protein

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4. The Endoplasmic Reticulum (ER) The “assembly line” of the cell, where products are finished.

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FACTORY PART CELL PART 1. Separate work areas. 1. Membrane-bound organelles. 2. A main office. 2. The nucleus. 3. Machines. 3. Ribosomes. 4. Assembly line (finishing). 4. Endoplasmic reticulum (ER) 5. Shipping/packaging. 5. Shipping/packaging. 6. Storage area. 6. Storage area. 7. Custodial staff. 7. Custodial staff. 8. Power source. 8. Power source. 9. Beams and columns. 9. Beams and columns. 10. Security. 10. Security.

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Smooth ER Attached ribosomes Rough ER The ER may be either rough or smooth.

38 Nucleus Smooth ER Rough ER

39 Endoplasmic Reticulum
What is the function of the rough (ER)? Copyright Pearson Prentice Hall

40 Rough ER Receives unfinished protein from the ribosomes and folds it into the correct shape. Protein folding Unfinished protein Finished protein

41 Eukaryotic Cell Structures
sSend How Organelles Work Together Eukaryotic Cell Structures Sends instructions Polymerization Nucleus Ribosome Unfinished Protein Enters Folding protein Unfinished Rough ER Finished Protein

42 Finished products must be packaged so that they can be shipped out.
Ribosomes Ribosomes produce proteins, the cell’s main product.

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5. The Golgi Apparatus The “shipping and packaging department” of a cell. Once a protein has been modified by the ER, it is ready to be packaged and shipped out of the cell. It’s next stop is the Golgi Apparatus.

44 Eukaryotic Cell Structures
FACTORY PART CELL PART 1. Separate work areas. 1. Membrane-bound organelles. 2. A main office. 2. The nucleus. 3. Machines. 3. Ribosomes. 4. Assembly line (finishing). 4. Endoplasmic reticulum (ER) 5. Shipping/packaging. 5. Shipping/packaging. 5. Golgi apparatus 6. Storage area. 6. Storage area. 7. Custodial staff. 7. Custodial staff. 8. Power source. 8. Power source. 9. Beams and columns. 9. Beams and columns. 10. Security. 10. Security.

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Golgi apparatus

46 Nucleus Golgi apparatus Be sure to label it on your diagram

47 Copyright Pearson Prentice Hall
Golgi Apparatus What is the function of the Golgi apparatus? Copyright Pearson Prentice Hall

48 Golgi Apparatus Receives finished proteins from the rough ER and packages them so that they can be shipped out of the cell.

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Each protein is packaged inside a vesicle, which pinches off from the Golgi apparatus. Eukaryotic Cell Structures Vesicle

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Vesicles fuse with the cell membrane, pushing the protein out of the cell. Eukaryotic Cell Structures

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How Organelles Work Together sSend Eukaryotic Cell Structures Sends instructions Polymerization Nucleus Ribosome Unfinished Protein Enters Folding protein Unfinished Rough ER Finished Protein Enters Packaging protein Finished Packaged protein Golgi apparatus


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