Ex 3: Simple Stains, Hanging Drop, and Wet-Mount Preparations
Terms in this set (...)
Define acidic dyes
anions (neg) that combine with cations of a base in the stained cell to form a salt
Define Basic dyes
possess cations that combine with an acid the stained material to form a salt
Why are specimens to be stained suspended in sterile or distilled water?
we use sterile water because to avoid false result by microorganism having in the water and same reason for distilled also to avoid impurities like crystals of some metal ions and also to avoid other microorganisms
which of the microscope objectives is most satisfactory for studying bacteria in stained preparations? In wet mount preparations? why?
List and define the basic shapes of bacteria. What are the dimensions of an average bacillus in micrometers? In centimeters