Drug A requires the use of adenosine triphosphate (ATP) in order to move into the cellular membrane. This type of diffusion is known as:
a. Elimination
b. Active transport
c. Facilitated
d. Osmosis
b
Rationale: a. Elimination is the removal of a drug from the body.
b. Active transport involves the use of energy, such as ATP to move a substance through a membrane that otherwise would not be able to penetrate.
c. Facilitated diffusion requires the use of a helper protein (such as insulin with glucose) to cause a change in the cellular membrane allowing entry of the substance.
d. Osmosis is a passive process involving the movement of water.
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Fill in the blank with correct word.