Part 3: Drug Transport Process Quiz

What is the first step in the process of drug transport after swallowing a pill according to the image?

• The drug is absorbed by blood cell membranes via diffusion.

• The drug substance is broken down in the stomach and liver.

• The drug enters the bloodstream directly.

• The drug binds to receptors in the mouth.

According to the image, how do drugs diffuse across a cell membrane?

• From areas of low concentration to areas of high concentration.

• From areas of high concentration to areas of low concentration.

• From the bloodstream to the stomach.

• From the liver to the cell membrane.

What is the role of the blood cell membranes in the drug transport process as depicted in the image?

• They synthesize the drug molecules.

• They eliminate the drug molecules from the body.

• They absorb the drug molecules via diffusion.

• They prevent the drug molecules from entering the cells.

What does the mathematical formula of Fick's First Law of Diffusion describe?

• The rate of energy transfer

• The rate of particle velocity

• The rate of diffusion flux

• The rate of temperature change

What type of molecules can cross the cell membrane via simple passive diffusion?

• Large, lipid insoluble drug molecules

• Small, lipid soluble drug molecules

• Large, lipid soluble drug molecules

• Small, lipid insoluble drug molecules

Which of the following factors increases the rate of diffusion?

• Decrease in temperature

• Increase in membrane thickness

• Increase in lipid solubility

• Decrease in surface area

What factor decreases the rate of diffusion?

• Increase in concentration gradient

• Decrease in drug molecule size

• Increase in temperature

• Increase in surface area

What is the purpose of semipermeable membranes in the context of engineered barriers for diffusion?

• To allow all molecules to diffuse through equally

• To prevent any molecules from diffusing through

• To only allow certain molecules to diffuse through

• To increase the rate of diffusion for all molecules

What is the role of polymers in engineered barriers according to the image?

• To increase the rate of diffusion of the drug substance

• To slow the rate of diffusion of the drug substance inside

• To completely stop the diffusion of the drug substance

• To act as a catalyst in the diffusion process

How does the diagram illustrate the function of polymers over time?

• The polymer dissolves completely over time

• The number of drug particles increases over time

• The drug particles are released more slowly over time

• The polymer changes shape over time