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Cell Theory and Cell Study: Tools and Techniques

Cell Theory and Cell Study: Tools and Techniques. The Dissecting Microscope. Allows the study of large specimens. It has two eyepieces and two objectives. It has low power magnification and 3D quality. It is also called a Stereo-microscope. Do Now!. Answer questions in UPCO page 54 # 1-3.

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Cell Theory and Cell Study: Tools and Techniques

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  1. Cell Theory and Cell Study: Tools and Techniques

  2. The Dissecting Microscope • Allows the study of large specimens. • It has two eyepieces and two objectives. • It has low power magnification and 3D quality. • It is also called a Stereo-microscope.

  3. Do Now! • Answer questions in UPCO page 54 # 1-3.

  4. The Electron Microscope • Can magnify up to 100,000x. • Cannot use live specimens. • Use a narrow beam of electrons instead of light. • Magnets are used to focus the electron beam.

  5. Do Now! • Answer questions 1-3 on pages 54,55.

  6. The Centrifuge • Instrument used to separate cell parts. • Separate parts according to density. • Material is spun around in a test tube at very high speeds. • Heaviest material is at the bottom, lightest is at the top.

  7. Do Now! • Answer question # 1 in the middle of page 55.

  8. Staining Techniques • Many parts of the cell are colorless and hard to see. • Staining techniques “color” certain cell parts so they can be more easily studied. • The most commonly used stains are Methylene Blue, and Iodine (Lugol’s Solution).

  9. Do Now! • Answer questions in UPCO page 53, #1, 2 .

  10. Magnification • Compound microscopes- each lens enlarges the image. • Total magnification is determined by multiplying the power of the eyepiece lens x the power of the objective lens. • Total magnification refers to the total amount the image is enlarged. • The unit of length used to measure specimens is the micrometer (u).

  11. Do Now! • Answer questions 1-4 on page 55,56 in UPCO. • Answer questions 1,2 in the middle of page 56.

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