Qualified Medication Aides (QMA) Practice Exam

What do cc's and ml's have in common?

1. They are both units of weight

2. They measure out the same volume

3. They represent different substances

4. They are used for different purposes

The correct answer is: They measure out the same volume

Both cc's and ml's are measurements of volume in the metric system. Specifically, one cubic centimeter (cc) is equal to one milliliter (ml), meaning they are interchangeable units for quantifying the same amount of liquid or space. This equivalence is especially useful in medical and scientific contexts where precise measurements are critical. The other choices refer to distinctions that do not apply to cc's and ml's. Neither cc's nor ml's measure weight, as weight has its own units (like grams or pounds), they do not represent different substances since they simply measure volume, and their uses can overlap with each other in many scenarios, particularly in healthcare and laboratory environments.