Week 4 Vocabulary

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Week 4 Vocabulary
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• Antonie Van Leeuwenhoek a Dutch maker of reading
  glasses made the first microscope in the 1500s.
• Robert Hooke In 1665, was the first to discover
  cells by looking at a piece of cork.
• Theodor Schwann was the first to conclude that
  all animals are made of cells.
• Matthias Schleiden concluded that all plants are
  made of cells.
• Rudolf Virchow hypothesized that cells divide to
  form new cells.
• Light Microscope is often called the brightfield
  microscope, because of the bright background.
  Magnifies up to 2,000X.
• Fluorescence Microscope requires the specimen to
  be treated with special fluorescent stain. Which
  allows certain cell structures to glow. Magnifies
  up to 1,500X.
• Phase-contrast Microscope it has the ability to
  bend light waves, thereby enhancing light and
  dark regions without the use of stains. Magnifies
  up to 1,500X.
• Scanning Electron Microscope commonly known as
  the SEM, sweeps a beam of electrons over a
  specimens surface, causing other electrons to be
  emitted. Magnifies up to 200,000X.
• Transmission Electron Microscope a TEM aims a
  beam of electrons through a specimen. Magnifies
  up to 1,000,000X.