Inside The Cell

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At tour to the cell with measuring tape. For school education.

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  • This was so much fun, i have a bio exam coming up and this was really helpful! thank you.
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  • to genetics2002 -

    Thank you. Sure you can use the slides for teaching - that is what I made them for ))
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  • Slides and the information is really great I teach Genetics for graduates,if you can share this i can also use some information from your slides. nmaars@gmail.com
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  • Hi Marina
    I am in a business job but I love genetics so I volunteer and teach a high school biology class on canine genetics to see if I can build some interest in the students. I have recently built this web site to support the class. Looks like you have a Probability in Genetics class would I bet is great. Here is my web site - Rich
    http://sites.google.com/site/eleaningmodulesinbiology/
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  • To rianchantin

    Thank you for the words. They give me enthusiasm for further work.

    Actually this was my first experiment with slides for kids - usually I make them for college and university students. And in Russian.

    I will translate some to English soon. Thanks!
    Marina
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Inside The Cell

  1. 1. Marina Voloshina Phys-Math School, Novosibirsk State University, 2008 http://www.slideshare.net/outdoors Cell objects size and number the Cell Inside
  2. 2. A look at the cell in the human scale
  3. 3. 1 millimeter (mm) 5 0 average animal cells Cells are very small
  4. 4. 20 μ m ( micro meters) 1 micro meter = 10 –6 meter Average human cell
  5. 5. Let’s enlarge the cell to one million times
  6. 6. To the size of a room 20 μ m 20 m
  7. 7. real cell our × 1 000 000 1 micrometer 1 meter 1 nanometer 1 millimeter
  8. 8. Come in! And look around
  9. 9. The walls – cell membrane are very thin. 1 cm only 1 cm
  10. 10. The Nucleus 1 0 m Nucleus – the largest part of the cell
  11. 11. Nuclei of 2 neighbouring cells
  12. 12. 5 cm pore 5 cm envelope Chromosomes inside chromosome 20 cm thick
  13. 13. Inside the Nucleus 20 cm thick 2 – 10 m long Chromosomes No = 46 in each human cell
  14. 14. Chromosomes are made of DNA – the information storage molecule The cell brain 2 mm 50 kilometers unfolded DNA of one chromosome
  15. 15. In cell division the nucleus brakes down and chromosomes go out A-A-A !
  16. 16. Chromosomes in cell division
  17. 17. Dividing cell
  18. 18. Back to non-dividing cell A-A-A !
  19. 19. Endoplasmic reticulum – membrane net that fills the whole cell
  20. 20. Endoplasmic reticulum makes proteins, lipids, carbo- hydrates and transport them 5 cm
  21. 21. Mitochondria is the size of a table
  22. 22. But there are hundreds of such « tables » all over the cell
  23. 23. Better to think of mitochondria as a fireplace It produces energy ATP ATP
  24. 24. Bacterial cells are the same size as mitochondria Infection ! Bacteria not allowed
  25. 25. Ribosomes are the smallest organelles in your cell 2 cm
  26. 26. But very important No cell can exist without them Ribosomes make proteins – the “working horses” of cell
  27. 27. If ribosome would be 2 cm then an average protein – just 0.5
  28. 28. The ribosomes are plenty – around 100 000 in the cell
  29. 29. Ribosomes produce proteins – and cytoplasm is crowded with them Cytoplasm: thick like porridge
  30. 30. Some proteins are for internal use. Others are to be secreted outwards proteins
  31. 31. Cell packs them with Golgi Apparatus A size of a bag or rucksack
  32. 32. Many proteins to export -> many bags. 1 – 300 Golgi in different cell types
  33. 33. Some packs stay in the cell - lysosomes 20 cm
  34. 34. Lysosomes are for digestion Digestive enzymes Digestive system
  35. 35. Man has bones and muscles Cell has a cytoskeleton made of protein fibers and tubules
  36. 36. Cytoskeleton 2 cm 0.5 cm
  37. 37. microtubule microfilaments Cytoskeleton
  38. 38. Plant cells up to 100 micrometers = 0.1 mm are larger
  39. 39. some additional srtuctures and have
  40. 40. Thick outer wall membrane, 1 cm 10 cm – meters
  41. 41. Plant cell wall made of cellulose
  42. 42. Chloroplasts for photosynthesis 5 meters 10 – 100 chloroplasts per a plant cell
  43. 43. Photosynthesis Sun light CO 2 from the air All plants and animals exist due to Sun energy fixed in this amazing process Organic matter
  44. 44. You can barely move in plant cell. Most of space is occupied with giant central vacuole Central vacuole
  45. 45. Plant cells of a root
  46. 46. All the measurements we done are × 1 000 000 scale Go out of cell and remember
  47. 47. The end
  48. 48. Links <ul><li>Information on the size of cell organelles </li></ul><ul><li>http ://www.nanomedicine.com/NMI/Tables/8.17.jpg </li></ul><ul><li>http://en.wikibooks.org/wiki/Cell_Biology/Introduction/Cell_size </li></ul><ul><li>http://www.cellbiol.ru/book/kletka/o_kletkah/razmery_kletochnyh_struktur ( russian) </li></ul><ul><li>Image credits </li></ul><ul><li>Science photo library http://www.sciencephoto.com/ </li></ul><ul><li>http:// www.ceraroot.com / eng / pc / education / investigation / </li></ul>

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