The metric prefix micro (µ) represents a factor of _____.

### Why this is right Micro (µ) represents $10^{-6}$, which is one millionth of the base unit. For example, a micrometre is one millionth of a metre. ### The concept Prefixes scale a unit by a power of ten, making very small or very large measurements easier to write. In biological science, micro-, nano-, and pico-scales are common because molecular and cellular structures can be much smaller than everyday objects. Nano (n) is $10^{-9}$, and pico (p) is $10^{-12}$. ### Terms - **Metric prefix**: a symbol placed before a unit to show a power-of-ten factor. - **Micro (µ)**: a prefix meaning $10^{-6}$. - **Nano (n)**: a prefix meaning $10^{-9}$. - **Pico (p)**: a prefix meaning $10^{-12}$. ### Remember Each step from micro to nano to pico is a factor of one thousand smaller.