Organelles

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Organelles

  1. 1. Cell Organelles<br />
  2. 2. Cell Organelles<br />Your body is made up of may specialized organs that carry out all the processes needed to live<br />In the same way, eukaryotic cells also have specialized parts called organelles that carry out specific functions<br />
  3. 3. Cell Organelles<br />All cells have to perform the same basic activities to stay alive:<br />Use energy<br />Store materials<br />Absorb materials<br />Eliminate waste<br />Transport substances<br />Reproduce<br />
  4. 4. Cell Organelles<br />Each organelle has a specific function within the cell.<br />The various organelles work together to meet the needs of the cell and the whole organism<br />
  5. 5. Cytoplasm<br />The cytoplasm is mostly made of water and can range from a liquid to a jelly-like substance<br />All of the cell’s organelles are suspended in the cytoplasm<br />
  6. 6. Cell Membrane<br />The cell is surrounded by a flexible, double-layered membrane called the phospholipidbilayer<br />This membrane also surrounds most organelles in a eukaryotic cell<br />
  7. 7. Nucleus<br />The nucleus contains genetic information that controls all of the cell’s activities<br />The genetic information is stored on chromosomes, which contain the cell’s DNA<br />
  8. 8. Mitochondria<br />Mitochondria are the organelles that perform cellular respiration within a cell<br />Cellular respiration:<br />glucose + O2 CO2 + H2O + energy<br />
  9. 9. Mitochondria<br />Cells that are very active (e.g. muscle cells) contain many mitochondria<br />Cells that are fairly inactive (e.g. fat cells) only have one or two mitochondria<br />
  10. 10. Endoplasmic Reticulum<br />The endoplasmic reticulum is a 3-dimensional network of tubes and pockets<br />These fluid-filled tubes transport materials through the cell<br />
  11. 11. Golgi Bodies<br />Golgi bodies collect and process materials to be removed from the cell<br />They also make and secrete mucus; cells that secrete a lot of mucus have many golgi bodies<br />
  12. 12. Vacuoles<br />A vacuole is a single layer of membrane enclosing fluid in a sac<br />Functions include:<br />Storage<br />Removing unwanted substances from the cell<br />Maintaining internal fluid pressure (turgor)<br />
  13. 13. Organelles in Plant Cells<br />Plant cells contain some organelles that animal cells do not have…<br />
  14. 14. Cell Wall<br />The cell wall is found outside of the cell membrane of a plant cell<br />It is a rigid but porous structure made of cellulose<br />The cell wall provides support for the cell and protection from physical injury<br />
  15. 15. Chloroplasts<br />Chloroplasts contain chlorophyll, which is the pigment that gives plants their green colour<br />Chloroplasts perform photosynthesis<br />Photosynthesis:<br />CO2 + H2O + energy  O2 + glucose<br />
  16. 16. Plant Cells<br />

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