Question

Bacterial cells are usually considered to have a diameter of 1 to 2 microns. A micron is one millionth of a meter or ${10}^{-6}$meters. If a bacterial cell has a diameter of 1.5 microns, how will we represent it?

• A. 0.000015 m
• B. 0.0000015 m
• C. 150000 m
• D. 150.0 m

Answer 1

The correct option is B 0.0000015 m

$1.5$ microns = $1.5\times {10}^{-6}$ meters
= $0.0000015$ meters