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Plant and Animal Cells 2

Plant and Animal Cells 2 . Lesson 2 September 23 rd , 2010. Plant and Animal cell diagrams. We will refer back to these diagrams all lesson Every time we go back to the diagram add the organelle name to your diagram. From Yesterday -Add these to your diagrams. Nucleus. Cell Membrane.

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Plant and Animal Cells 2

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  1. Plant and Animal Cells 2 Lesson 2 September 23rd, 2010

  2. Plant and Animal cell diagrams • We will refer back to these diagrams all lesson • Every time we go back to the diagram add the organelle name to your diagram

  3. From Yesterday -Add these to your diagrams Nucleus Cell Membrane Nucleolus • Chromatin Cell Membrane Cytoplasm

  4. Vacuoles and Vesicles • Membrane-bound organelles that store nutrients, wastes, and other substances used by the cell • In plant cells, the central vacuole stores water for the cell. When water the cell, the central vacuole swells, causing the plant cell to become firm. • Vesicles transport substances throughout the cell.

  5. Vacuoles and Vesicles

  6. Central Vacuole Vacuole Vesicle

  7. Mitochondria • Powerhouses of the cell. • Reactions occur in these organelles to convert the chemical energy in sugar into energy that the cell can use. (Part of cellular respiration)

  8. Mitochondria

  9. Lysosomes • Where digestion takes place. • Small and round • Filled with enzymes (natural catalysts) • A protein that can speed up chemical reaction in the cell. • Break down invading bacteria and damaged cell organelles

  10. Lysosome

  11. Golgi Apparatus • Receives proteins from the endoplasmic reticulum. • modifies, sorts, and packages proteins for delivery throughout the cell or outside of the cell. • Looks like a stack of flattened membranes

  12. Golgi Apparatus Golgi Apparatus

  13. Endoplasmic Reticulum (ER) • Made of a series of interconnected small tubes that carry materials through the cell.

  14. Endoplasmic Reticulum (ER) • Rough endoplasmic reticulum is associated with making proteins • ER that contains ribosomes • Ribosomes are small, dense-looking organelles that may be attached to the rough endoplasmic reticulum or free in the cytoplasm. • Sites where proteins are assembled.

  15. Endoplasmic Reticulum (ER) • Smooth endoplasmic reticulum • Associated with the production of fats and oils • Does not have ribosome's

  16. Rough endoplasmic reticulum Smooth endoplasmic reticulum Ribosomes (small dots)

  17. Cytoskeleton • Internal network of fibres of protein filaments. • Maintains the cell’s shape.

  18. Cytoskeleton

  19. Organelles in Plant Cells • Some organelles are found only in plant cells. Cell Wall • Only plant cells, bacteria, fungi, and some algae have a cell wall. • The Rigid frame around the cell that provides strength, protection, and support

  20. Cell Wall

  21. Chloroplasts • Only in plant cells and some algae. • Contain a green substance called chlorophyll. • Uses energy from the Sun to convert carbon dioxide and water into sugar and oxygen in a process called photosynthesis.

  22. Chloroplasts

  23. Chloroplasts • Made up of little sacs known as thylakoids. • Resemble a stack of coins. • Surrounded by a thick fluid called stroma. • A stack of thylakoids is called a granum

  24. Differences between Plant and Animal Cells - Plants • Contain Chlorophyll – photosynthesis • Large central Vacuole • Store energy in the forms such as cornstarch and oil

  25. Differences between Plant and Animal Cells - Animals • Small Vacuole • Store energy in form of glycogen, carbohydrates, and lipids (fat) • Some have specialized compounds for haemoglobin and cholesterol

  26. Differences between Plant and Animal Cells - Animals • Centrioles – Paired structures used in cell division. • Cilia or flagellum –used for movement

  27. http://www.youtube.com/watch?v=a6boqEbcJWI

  28. Homework • Finish Lab and hand in • Finish and hand in questions 1-5

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