Question

A red blood cell is 7 x 10-6 m in size. This means it is 7 __________ in size. What unit completes the sentence?

Answer 1

If a red blood cell is 7 x $10^-^6$ m in size, it means that such a cell is 7 microns or micrometer in size. The unit that completes the sentence will, thus, be microns or micrometer.

According to international system of measurement:

• $10^{-1}$ m = decimeter

• $10^{-2}$ m = centimeter

• $10^{-3}$ m = millimeter
• $10^{-6}$ m = micrometer or micron
• $10^{-9}$ m = nanometer

Thus, a measurement of 7 x $10^-^6$ m is the same is 7 micons or 7 micrometer.

More on metric conversion can be found here: https://brainly.com/question/17767575