BIOD 171 MODULE 3 EXAM Questions and Answers with Complete Solutions rated A+

Immunochemistry - involves staining of cells to see structures microscopy - the use of light or electrons to magnify objects Micrometer (um) - 10^-6 m, measures size of cells Nanometer (nm) - 10^-9m, used to measure cellular organelles and viruses Magnification - the ratio of an object's image size to its real size Resolution of a microscope - ability to distinguish two objects as separate entities Contrast Microscopy - shows presence of dye or other treatments Scanning Tunneling Microscope (STM) - microscope that measures electrons that leak or "tunnel" from the surface of the specimen 0.01nm-10nm can see atoms amino acids DNA and proteinsTransmission Electron Microscope (TEM) - 0.078-100um can see atoms, DNA, amino, proteins, ribosomes, viruses, bacteria and archaea, mitochondria, chloroplasts, human blood cells scanning electron microscope - 0.4-1mm amino acids - red blood cells compound light microscope - 200 nm - 10 mm can see bacteria and archaea, organelles, blood cells, and large protozoa