A lab technologist calibrates her microscope and finds that 7 stage divisions are equal to 38 ocular divisions. The entire scale on the stage micrometer is 1 mm long and has 100 equal divisions. The technologist measures a coccus-shaped cell and determines that the cell is 4 ocular divisions in length. What is the length of this cell in µm? Show all calculations.
A lab technologist calibrates her microscope and finds that 7 stage divisions are equal to 38 ocular divisions. The entire scale on the stage micrometer is 1 mm long and has 100 equal divisions. The technologist measures a coccus-shaped cell and determines that the cell is 4 ocular divisions in length. What is the length of this cell in µm? Show all calculations.
Microorganisms are microscopic objects, as they are not visible to naked eye and can only be observed under microscope.
Microscope is an instrument which is used to enlarge the images of the internal structures of the cell and study them. To determine the length, breadth diameter and thickness of the cell, two types of micrometer are used. One is an ocular micrometer, a circular glass disc which fits into the eyepiece. It has graduations on it's surface. The other is stage micrometer, that is a glass slide with standard graduations 10 µ apart. The slide must be clipped to the stage.
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