Active transport is a method in which cellular energy is used so that cells can obtain what they need from tissue fluid.

Where should pressure-relief valves be placed?

A. On every other length of pipe B. On every length of pipe over 5 feet (1.5 m) long C. On every length of pipe between two shutoff valves D. On every other length of pipe between two shutoff valves

You administer 0.5 mL of a 1:200 strength drug; how many milligrams of active ingredient are you giving?

a. 0.25 mg b. 2.5 mg c. 25 mg d. 12.5 mg