Download 1. a) Who are thought to have invented the first microscope? • Hans

 1. 2. a) Who are thought to have invented the first microscope? • Hans Jensen • Zacharias Jensen • Hans Lippershey • Robert Hooke b) Who invented the form of microscope most similar to the ones used today? Robert Hooke c) Who developed the cell theory? Theodor Schwann and Matthias Schleidn. d) Who proved that cells reproduced and didn’t just appear from nowhere? Rudolph Verchow a)
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Who saw the first cells? Robert Hooke. Who saw the first animal cells? Anton van Leeuwenhoek Who saw the first bacteria? Anton van Leeuwenhoek Who first saw cell nucleus? Robert Brown Who first saw cell mitochondria? Rudolph Kolliker 3. The three main points of the cell theory are that all living things are made up of cells, new cells are created when two old cells divide in two and all cells are similar to each other, but are not identical. 4. Another name for the eyepiece is the ocular lens. 5. TEM = Transmission Electron Microscope SEM = Scanning Electron Microscope. 6. Cells were not known before the invention of microscopes because cells and small. They are so small that they aren’t visible to an unaided eye, but with the help of microscopes they could be seen and studied. 7. Hooke named the small boxes that he had seen in the cork cells. He did this because he thought that the small boxes looked like the rooms that the monks had occupied at the time and the names of these rooms were also called cells. 8. Define the following terms: a)
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Microscopic-­‐ so small that it is only visible through a microscope. Specimen – The thing that you put under a microscope. Image – An image is what you see when you look through the eye piece. Field of View (FOV) – is the diameter of light in a microscope. As the strength of light increases, the FOV gets smaller. 9. One word that would describe the size of a cell would be “microscopic”. 10. If a magnification of 10x was used, it would make the image 10x bigger than it would originally be. 11. The objective should never be changed while you are looking into the eyepiece because it may cause disorientation with the sudden change of magnification. 12. a)
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Eyepiece or Ocular Lens Objective Stage Lamp Base Arm Course Focus knob. Fine Focus Knob. 13. Eye Piece Magnification Objective Lens Magnification Total Magnification X10 X10 X100 X5 X100 X500 X20 X40 X800 X3 X100 X300 X30 X20 X600 14. A specimen is 0.2 mm long. If it is magnified by 1000 times is would now be 200mm long.