EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The width of a cell is 0.02mm. The width of its image under a microscope is 8mm. Calculate the magnification used.
A
x0.16
B
x200
C
x400
D
x40
Explanation: 

Detailed explanation-1: -Divide the number of cells in view with the diameter of the field of view to figure the estimated length of the cell. If the number of cells is 50 and the diameter you are observing is 5 millimeters in length, then one cell is 0.1 millimeter long. Measured in microns, the cell would be 1, 000 microns in length.

Detailed explanation-2: -Field of view is how much of your specimen or object you will be able to see through the microscope. At 40x magnification you will be able to see 5mm. At 100x magnification you will be able to see 2mm. At 400x magnification you will be able to see 0.45mm, or 450 microns.

Detailed explanation-3: -Field of view at 400x magnification is approximately 0.45mm, or 450 microns. Field of view at 1000x magnification is approximately 0.180mm, or 180 microns.

Detailed explanation-4: -Measure the scale bar image (beside drawing) in mm. Convert to µm (multiply by 1000). Magnification = scale bar image divided by actual scale bar length (written on the scale bar).

There is 1 question to complete.