OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1 x10-12 mm
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1 x 10-9 mm
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1 x 10-6mm
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1 x 10-3 mm
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Detailed explanation-1: -1–10 m – length of a typical bacterium. 3–8 m – width of strand of spider web silk. 5 m – length of a typical human spermatozoon’s head.
Detailed explanation-2: -A micron is a metric unit of measurement where one micron is equivalent to one one-thousandth of a millimetre [1 micron (1) = 1/1000 mm] or 1 micron (micrometer) = 1/1, 000, 000 of a metre. Visualizing a micron. a human red blood cell is 5 microns. an average human hair has a diameter of 100 microns.
Detailed explanation-3: -Listen to pronunciation. The amount of a substance equal to a millionth of a mole (a measure of the amount of a substance). Also called micromole.
Detailed explanation-4: -micrometre, also called micron, metric unit of measure for length equal to 0.001 mm, or about 0.000039 inch. Its symbol is m.