What does the prefix micro- mean?

Study for the Pivot Point The Building Blocks of the Human Body 105E.01. Engage with multiple choice questions and flashcards, complete with hints and explanations. Get ready for your exam!

Multiple Choice

What does the prefix micro- mean?

Explanation:
Micro- signals something very small. In the metric system, micro- denotes one millionth of a unit, which is why we talk about a micrometer or a microgram—things that are tiny. That makes the option meaning small the best choice. The other ideas don’t fit because large would be indicated by macro- or mega-, “many” isn’t a standard SI prefix, and one hundredth is the meaning of centi-.

Micro- signals something very small. In the metric system, micro- denotes one millionth of a unit, which is why we talk about a micrometer or a microgram—things that are tiny. That makes the option meaning small the best choice. The other ideas don’t fit because large would be indicated by macro- or mega-, “many” isn’t a standard SI prefix, and one hundredth is the meaning of centi-.

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