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WHAT IS INSIDE A CELL? PowerPoint Presentation
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WHAT IS INSIDE A CELL?

WHAT IS INSIDE A CELL?

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WHAT IS INSIDE A CELL?

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  1. WHAT IS INSIDE A CELL? ORGANELLES CYTOPLASM AND DNA!!!

  2. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell Nerve Cell

  3. Two Types of Cells Prokaryotic Eukaryotic

  4. Prokaryotic • Do not have organelles • Few internal structures: cell membrane and cytoplasm • No Nucleus • One-celled organisms, Bacteria http://library.thinkquest.org/C004535/prokaryotic_cells.html

  5. Eukaryotic • Almost all multicellular organisms are eukaryotic • Cells are larger and more complex than prokaryotic cells. • Has genetic material inside of nucleus Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html

  6. Cell Structure & FunctionContain organelles surrounded by membranesMost living organisms http://koning.ecsu.ctstateu.edu/cell/cell.html

  7. “Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif

  8. “Typical” Plant Cell http://waynesword.palomar.edu/images/plant3.gif

  9. Cell Parts Organelles

  10. Surrounding the Cell

  11. Cell Membrane • Outer membrane of cell that controls movement in and out of the cell • Double layer • Protective covering that encloses the entire cell http://library.thinkquest.org/12413/structures.html

  12. Cell Wall • Most commonly found in plant cells & bacteria • Supports & protects cells http://library.thinkquest.org/12413/structures.html

  13. Inside the Cell

  14. Nucleus • Directs cell activities • Separated from cytoplasm by nuclear membrane • Contains genetic material - DNA

  15. Cytoplasm • Gel-like mixture • Surrounded by cell membrane • Contains hereditary material • Most of the work of the cell is carried out here • Scanning electron micrograph of a fracture of nerve cells. The central nucleus and surrounding cytoplasm are visible

  16. Endoplasmic Reticulum • Moves materials around in cell • Manufactures parts of the cell membrane http://library.thinkquest.org/12413/structures.html

  17. Vesicles • Transports processed materials to the Golgi Apparatus • Part of the broken off endoplasmic reticulum

  18. Ribosomes • Each cell contains thousands • Uses information from the nucleus to build proteins http://library.thinkquest.org/12413/structures.html

  19. Mitochondria • Uses oxygen to produce energy from processing food, mostly sugars through chemical reactions - breaking down fats & carbohydrates • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html

  20. Golgi Bodies • Takes materials man- ufactured by the e.r., and finishes processing them. • Move materials within and in or out of the cell • Folded membranes looks like stack of pancakes http://library.thinkquest.org/12413/structures.html

  21. Lysosome • Containes wates andstores and breaks down nutrients ~ digestive 'plant' for proteins, fats, and carbohydrates • Transports undigested material to cell membrane for removal • Cell breaks down if lysosome explodes http://library.thinkquest.org/12413/structures.html

  22. Vacuoles • Membrane-bound sacs for storage, digestion, and waste removal • Contains water solution • Help plants maintain shape http://library.thinkquest.org/12413/structures.html

  23. Chloroplast • Usually found in plant cells • Contains green chlorophyll • Where photosynthesis takes place http://library.thinkquest.org/12413/structures.html